Tennessee Technological University

Graduate Research Assistant, Instructor

• Updated ASHRAE Duct Fitting Database for pressure losses in HVAC converging flow duct fittings by conducting experimental program per ASHRAE Standard
• Developed numerical models for CFD analysis of turbulence development in HVAC ducts/fittings and validated the model against experimental and published results
• Responsible for teaching undergrad classes-Fluid Mechanics, Thermodynamics, Heat Transfer, Energy Systems

ASHRAE

Served as a reviewer for a manuscript submitted to ASHRAE journal - Science & Technology for Built Environment to give critical remarks and suggestions to the authors.

Field Controls

Product Engineer

• Team leader in development of air movement and air handling products
• Plan and execute laboratory testing for HVAC components
• Design of experiments (aerodynamic performance, reliability, life cycle, cold storage, high temperature, heat rise testing)
• Prepare and supervise lab schedule to ensure timely completion of test projects
• New product development and agency approval
• Vendor development, component selection, and qualification
• Participation in trade associations and industry groups

Piping Technology & Products, Inc.

Project Engineer

• Responsible for design and detailing of pressure vessels and steel fabrications per ASME/API design codes
• Coordinated with vendors and customers to define project scope and monitored progress
• Handled RFQs and ECRs and maintained BOMs and cost sheets

Johnson Controls

Sr HVAC Test Engineer

• Develop and design test plans for HVAC products, equipment, and system engineering projects
• Implement projects and processes using Lean Six Sigma tools
• Apply statistical principles, DOE, and analyze test data
• Develop faster and innovative testing methods for component qualification - (reliability, life-cycle, product comparisons)
• Resolve operational issues and improve efficiency of test programs
• Optimize laboratory resources and data collection for rapid testing and decision making

Comefri

Applications Engineer

• Airflow and acoustic performance testing of centrifugal fans and synthesis of complex test data
• Efficient data acquisition and analysis to optimize lab-testing
• Process-association for agency certification- AMCA
• Product design, modification, and parametric studies for product improvement and NPD
• Product performance testing for acquisition of standard catalog performance data
• Support field and product development issues
• Engineering assistance to sales team and customers in fan selection and system troubleshooting

Laboratory Testing of a Fabric Air Dispersion System

ASHRAE Transactions, Vol. 118, Issue 2, 2012, pp. 484-490.

Friction factors for a round non-porous fabric air dispersion system were measured for various configurations.

Laboratory Testing of a Fabric Air Dispersion System

ASHRAE Transactions, Vol. 118, Issue 2, 2012, pp. 484-490.

Friction factors for a round non-porous fabric air dispersion system were measured for various configurations.

CFD Analysis of Turbulence Development in Flat Oval Ducts for Various Entrances

ASHRAE Transactions, Vol. 121, Part 1, 2015.

Development of turbulence kinetic energy in HVAC ducts exhibiting various entrance duct geometries is the focus of this article.

Laboratory Testing of a Fabric Air Dispersion System

ASHRAE Transactions, Vol. 118, Issue 2, 2012, pp. 484-490.

Friction factors for a round non-porous fabric air dispersion system were measured for various configurations.

CFD Analysis of Turbulence Development in Flat Oval Ducts for Various Entrances

ASHRAE Transactions, Vol. 121, Part 1, 2015.

Development of turbulence kinetic energy in HVAC ducts exhibiting various entrance duct geometries is the focus of this article.

Loss Coefficients of Bends in Fully Stretched Nonmetallic Flexible Ducts

Science and Technology for the Built Environment, Vol. 21, Issue 4, 2015, pp. 413-419.

Zero-length loss coefficients were calculated for controlled bends of 45° and 90° in nonmetallic spiral wire helix core flexible ducts under fully stretched conditions. This research presented evidence that the loss coefficient of a fully stretched flexible duct bend is strongly influenced by the number of wire loops present in the bend.

Laboratory Testing of a Fabric Air Dispersion System

ASHRAE Transactions, Vol. 118, Issue 2, 2012, pp. 484-490.

Friction factors for a round non-porous fabric air dispersion system were measured for various configurations.

CFD Analysis of Turbulence Development in Flat Oval Ducts for Various Entrances

ASHRAE Transactions, Vol. 121, Part 1, 2015.

Development of turbulence kinetic energy in HVAC ducts exhibiting various entrance duct geometries is the focus of this article.

Loss Coefficients of Bends in Fully Stretched Nonmetallic Flexible Ducts

Science and Technology for the Built Environment, Vol. 21, Issue 4, 2015, pp. 413-419.

Zero-length loss coefficients were calculated for controlled bends of 45° and 90° in nonmetallic spiral wire helix core flexible ducts under fully stretched conditions. This research presented evidence that the loss coefficient of a fully stretched flexible duct bend is strongly influenced by the number of wire loops present in the bend.

Computational Fluid Dynamics Studies of Developing Turbulent Flows with Various Entrance Geometries

International Journal of HVAC&R Volume 19, Issue 1, 2013, pp. 38-52.

To investigate the effect of entrance geometry on pressure loss characteristics of turbulent flow in straight ducts, numerical analysis was performed by solving RANS equations.

Laboratory Testing of a Fabric Air Dispersion System

ASHRAE Transactions, Vol. 118, Issue 2, 2012, pp. 484-490.

Friction factors for a round non-porous fabric air dispersion system were measured for various configurations.

CFD Analysis of Turbulence Development in Flat Oval Ducts for Various Entrances

ASHRAE Transactions, Vol. 121, Part 1, 2015.

Development of turbulence kinetic energy in HVAC ducts exhibiting various entrance duct geometries is the focus of this article.

Loss Coefficients of Bends in Fully Stretched Nonmetallic Flexible Ducts

Science and Technology for the Built Environment, Vol. 21, Issue 4, 2015, pp. 413-419.

Zero-length loss coefficients were calculated for controlled bends of 45° and 90° in nonmetallic spiral wire helix core flexible ducts under fully stretched conditions. This research presented evidence that the loss coefficient of a fully stretched flexible duct bend is strongly influenced by the number of wire loops present in the bend.

Computational Fluid Dynamics Studies of Developing Turbulent Flows with Various Entrance Geometries

International Journal of HVAC&R Volume 19, Issue 1, 2013, pp. 38-52.

To investigate the effect of entrance geometry on pressure loss characteristics of turbulent flow in straight ducts, numerical analysis was performed by solving RANS equations.

Pressure Loss in Fully Stretched Nonmetallic Flexible Duct with a Bend

International Journal of HVAC&R Research Vol. 19, Issue 1, 2013, pp. 87-100.

Experimental program was undertaken to evaluate pressure loss characteristics of nonmetallic flexible duct under fully stretched conditions and to determine a pressure corrective factor.

Laboratory Testing of a Fabric Air Dispersion System

ASHRAE Transactions, Vol. 118, Issue 2, 2012, pp. 484-490.

Friction factors for a round non-porous fabric air dispersion system were measured for various configurations.

CFD Analysis of Turbulence Development in Flat Oval Ducts for Various Entrances

ASHRAE Transactions, Vol. 121, Part 1, 2015.

Development of turbulence kinetic energy in HVAC ducts exhibiting various entrance duct geometries is the focus of this article.

Loss Coefficients of Bends in Fully Stretched Nonmetallic Flexible Ducts

Science and Technology for the Built Environment, Vol. 21, Issue 4, 2015, pp. 413-419.

Zero-length loss coefficients were calculated for controlled bends of 45° and 90° in nonmetallic spiral wire helix core flexible ducts under fully stretched conditions. This research presented evidence that the loss coefficient of a fully stretched flexible duct bend is strongly influenced by the number of wire loops present in the bend.

Computational Fluid Dynamics Studies of Developing Turbulent Flows with Various Entrance Geometries

International Journal of HVAC&R Volume 19, Issue 1, 2013, pp. 38-52.

To investigate the effect of entrance geometry on pressure loss characteristics of turbulent flow in straight ducts, numerical analysis was performed by solving RANS equations.

Pressure Loss in Fully Stretched Nonmetallic Flexible Duct with a Bend

International Journal of HVAC&R Research Vol. 19, Issue 1, 2013, pp. 87-100.

Experimental program was undertaken to evaluate pressure loss characteristics of nonmetallic flexible duct under fully stretched conditions and to determine a pressure corrective factor.

Energy Balance Analysis of HVAC Divided Flow Fittings

Science and Technology for the Built Environment, Volume 23, 2017, Issue 1, 2017, pp. 218-225

Energy balances are presented on HVAC flow fittings to calculate the net energy loss. It is shown that the total energy loss is positive within the limited accuracy of the published correlations for loss coefficient data.

Laboratory Testing of a Fabric Air Dispersion System

ASHRAE Transactions, Vol. 118, Issue 2, 2012, pp. 484-490.

Friction factors for a round non-porous fabric air dispersion system were measured for various configurations.

CFD Analysis of Turbulence Development in Flat Oval Ducts for Various Entrances

ASHRAE Transactions, Vol. 121, Part 1, 2015.

Development of turbulence kinetic energy in HVAC ducts exhibiting various entrance duct geometries is the focus of this article.

Loss Coefficients of Bends in Fully Stretched Nonmetallic Flexible Ducts

Science and Technology for the Built Environment, Vol. 21, Issue 4, 2015, pp. 413-419.

Zero-length loss coefficients were calculated for controlled bends of 45° and 90° in nonmetallic spiral wire helix core flexible ducts under fully stretched conditions. This research presented evidence that the loss coefficient of a fully stretched flexible duct bend is strongly influenced by the number of wire loops present in the bend.

Computational Fluid Dynamics Studies of Developing Turbulent Flows with Various Entrance Geometries

International Journal of HVAC&R Volume 19, Issue 1, 2013, pp. 38-52.

To investigate the effect of entrance geometry on pressure loss characteristics of turbulent flow in straight ducts, numerical analysis was performed by solving RANS equations.

Pressure Loss in Fully Stretched Nonmetallic Flexible Duct with a Bend

International Journal of HVAC&R Research Vol. 19, Issue 1, 2013, pp. 87-100.

Experimental program was undertaken to evaluate pressure loss characteristics of nonmetallic flexible duct under fully stretched conditions and to determine a pressure corrective factor.

Energy Balance Analysis of HVAC Divided Flow Fittings

Science and Technology for the Built Environment, Volume 23, 2017, Issue 1, 2017, pp. 218-225

Energy balances are presented on HVAC flow fittings to calculate the net energy loss. It is shown that the total energy loss is positive within the limited accuracy of the published correlations for loss coefficient data.

Measurements of Flat Oval Elbow Loss Coefficients

ASHRAE Transactions, Vol. 115, Part 1, 2009 pp. 35-47.

Pressure loss coefficients were measured for three types of 45 different mitered elbows of flat oval ducts. A regression analysis was performed on the loss coefficient data.

Laboratory Testing of a Fabric Air Dispersion System

ASHRAE Transactions, Vol. 118, Issue 2, 2012, pp. 484-490.

Friction factors for a round non-porous fabric air dispersion system were measured for various configurations.

CFD Analysis of Turbulence Development in Flat Oval Ducts for Various Entrances

ASHRAE Transactions, Vol. 121, Part 1, 2015.

Development of turbulence kinetic energy in HVAC ducts exhibiting various entrance duct geometries is the focus of this article.

Loss Coefficients of Bends in Fully Stretched Nonmetallic Flexible Ducts

Science and Technology for the Built Environment, Vol. 21, Issue 4, 2015, pp. 413-419.

Zero-length loss coefficients were calculated for controlled bends of 45° and 90° in nonmetallic spiral wire helix core flexible ducts under fully stretched conditions. This research presented evidence that the loss coefficient of a fully stretched flexible duct bend is strongly influenced by the number of wire loops present in the bend.

Computational Fluid Dynamics Studies of Developing Turbulent Flows with Various Entrance Geometries

International Journal of HVAC&R Volume 19, Issue 1, 2013, pp. 38-52.

To investigate the effect of entrance geometry on pressure loss characteristics of turbulent flow in straight ducts, numerical analysis was performed by solving RANS equations.

Pressure Loss in Fully Stretched Nonmetallic Flexible Duct with a Bend

International Journal of HVAC&R Research Vol. 19, Issue 1, 2013, pp. 87-100.

Experimental program was undertaken to evaluate pressure loss characteristics of nonmetallic flexible duct under fully stretched conditions and to determine a pressure corrective factor.

Energy Balance Analysis of HVAC Divided Flow Fittings

Science and Technology for the Built Environment, Volume 23, 2017, Issue 1, 2017, pp. 218-225

Energy balances are presented on HVAC flow fittings to calculate the net energy loss. It is shown that the total energy loss is positive within the limited accuracy of the published correlations for loss coefficient data.

Measurements of Flat Oval Elbow Loss Coefficients

ASHRAE Transactions, Vol. 115, Part 1, 2009 pp. 35-47.

Pressure loss coefficients were measured for three types of 45 different mitered elbows of flat oval ducts. A regression analysis was performed on the loss coefficient data.

Laboratory Testing of Converging Flow Flat Oval Tees and Laterals to Determine Loss Coefficients

International Journal of HVAC&R Research, Vol.17, Issue 5, 2011, pp. 710-725.

Converging flow tees and laterals were tested to measure friction. A logarithmic model was proposed to correlate the losses as functions of flow and geometry characteristics. Result were supported with uncertainty analysis.

Laboratory Testing of a Fabric Air Dispersion System

ASHRAE Transactions, Vol. 118, Issue 2, 2012, pp. 484-490.

Friction factors for a round non-porous fabric air dispersion system were measured for various configurations.

CFD Analysis of Turbulence Development in Flat Oval Ducts for Various Entrances

ASHRAE Transactions, Vol. 121, Part 1, 2015.

Development of turbulence kinetic energy in HVAC ducts exhibiting various entrance duct geometries is the focus of this article.

Loss Coefficients of Bends in Fully Stretched Nonmetallic Flexible Ducts

Science and Technology for the Built Environment, Vol. 21, Issue 4, 2015, pp. 413-419.

Zero-length loss coefficients were calculated for controlled bends of 45° and 90° in nonmetallic spiral wire helix core flexible ducts under fully stretched conditions. This research presented evidence that the loss coefficient of a fully stretched flexible duct bend is strongly influenced by the number of wire loops present in the bend.

Computational Fluid Dynamics Studies of Developing Turbulent Flows with Various Entrance Geometries

International Journal of HVAC&R Volume 19, Issue 1, 2013, pp. 38-52.

To investigate the effect of entrance geometry on pressure loss characteristics of turbulent flow in straight ducts, numerical analysis was performed by solving RANS equations.

Pressure Loss in Fully Stretched Nonmetallic Flexible Duct with a Bend

International Journal of HVAC&R Research Vol. 19, Issue 1, 2013, pp. 87-100.

Experimental program was undertaken to evaluate pressure loss characteristics of nonmetallic flexible duct under fully stretched conditions and to determine a pressure corrective factor.

Energy Balance Analysis of HVAC Divided Flow Fittings

Science and Technology for the Built Environment, Volume 23, 2017, Issue 1, 2017, pp. 218-225

Energy balances are presented on HVAC flow fittings to calculate the net energy loss. It is shown that the total energy loss is positive within the limited accuracy of the published correlations for loss coefficient data.

Measurements of Flat Oval Elbow Loss Coefficients

ASHRAE Transactions, Vol. 115, Part 1, 2009 pp. 35-47.

Pressure loss coefficients were measured for three types of 45 different mitered elbows of flat oval ducts. A regression analysis was performed on the loss coefficient data.

Laboratory Testing of Converging Flow Flat Oval Tees and Laterals to Determine Loss Coefficients

International Journal of HVAC&R Research, Vol.17, Issue 5, 2011, pp. 710-725.

Converging flow tees and laterals were tested to measure friction. A logarithmic model was proposed to correlate the losses as functions of flow and geometry characteristics. Result were supported with uncertainty analysis.

Influence of Aspect Ratio and Hydraulic Diameter on Flat Oval Elbow Loss Coefficients

ASHRAE Transactions, Vol. 115, Part 1, 2009, pp. 48-57

A power law expression was proposed to correlate loss coefficient data as a function of aspect ratio and hydraulic diameter. Mathematical model was proposed by performing a least squares curve-fit to the data.

Laboratory Testing of a Fabric Air Dispersion System

ASHRAE Transactions, Vol. 118, Issue 2, 2012, pp. 484-490.

Friction factors for a round non-porous fabric air dispersion system were measured for various configurations.

CFD Analysis of Turbulence Development in Flat Oval Ducts for Various Entrances

ASHRAE Transactions, Vol. 121, Part 1, 2015.

Development of turbulence kinetic energy in HVAC ducts exhibiting various entrance duct geometries is the focus of this article.

Loss Coefficients of Bends in Fully Stretched Nonmetallic Flexible Ducts

Science and Technology for the Built Environment, Vol. 21, Issue 4, 2015, pp. 413-419.

Zero-length loss coefficients were calculated for controlled bends of 45° and 90° in nonmetallic spiral wire helix core flexible ducts under fully stretched conditions. This research presented evidence that the loss coefficient of a fully stretched flexible duct bend is strongly influenced by the number of wire loops present in the bend.

Computational Fluid Dynamics Studies of Developing Turbulent Flows with Various Entrance Geometries

International Journal of HVAC&R Volume 19, Issue 1, 2013, pp. 38-52.

To investigate the effect of entrance geometry on pressure loss characteristics of turbulent flow in straight ducts, numerical analysis was performed by solving RANS equations.

Pressure Loss in Fully Stretched Nonmetallic Flexible Duct with a Bend

International Journal of HVAC&R Research Vol. 19, Issue 1, 2013, pp. 87-100.

Experimental program was undertaken to evaluate pressure loss characteristics of nonmetallic flexible duct under fully stretched conditions and to determine a pressure corrective factor.

Energy Balance Analysis of HVAC Divided Flow Fittings

Science and Technology for the Built Environment, Volume 23, 2017, Issue 1, 2017, pp. 218-225

Energy balances are presented on HVAC flow fittings to calculate the net energy loss. It is shown that the total energy loss is positive within the limited accuracy of the published correlations for loss coefficient data.

Measurements of Flat Oval Elbow Loss Coefficients

ASHRAE Transactions, Vol. 115, Part 1, 2009 pp. 35-47.

Pressure loss coefficients were measured for three types of 45 different mitered elbows of flat oval ducts. A regression analysis was performed on the loss coefficient data.

Laboratory Testing of Converging Flow Flat Oval Tees and Laterals to Determine Loss Coefficients

International Journal of HVAC&R Research, Vol.17, Issue 5, 2011, pp. 710-725.

Converging flow tees and laterals were tested to measure friction. A logarithmic model was proposed to correlate the losses as functions of flow and geometry characteristics. Result were supported with uncertainty analysis.

Influence of Aspect Ratio and Hydraulic Diameter on Flat Oval Elbow Loss Coefficients

ASHRAE Transactions, Vol. 115, Part 1, 2009, pp. 48-57

A power law expression was proposed to correlate loss coefficient data as a function of aspect ratio and hydraulic diameter. Mathematical model was proposed by performing a least squares curve-fit to the data.

Pressure Loss of Corrugated Spiral Duct

ASHRAE Transactions, Vol. 115, Part 1, 2009 pp. 28-34.

Experiments were conducted to determine friction factor in circular corrugated galvanized spiral ducts. Equivalent diameter required to convey the same flow at same losses as non-corrugated ducts was calculated.

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