Dr. Jokar specializes in thermodynamics, fluid mechanics, heat transfer, and thermal systems. He has extensive experience both in academia and industry. He has conducted research on industry-sponsored research projects and obtained few competitive grants as the principal investigator, including: experimental study of carbon dioxide condensation in a chevron-angle plate geometry exchanger (sponsored by ASHRAE), and computational analysis and experimental design of a microchannel electronics cooler for high-power semiconductor diode laser applications (sponsored by Washington Technology Center). He conducted a comprehensive research during his doctoral study to evaluate and analyze a dual-loop automotive heat pump-air conditioning system. He has been the recipient of the ASHRAE New Investigator Award to study heat transfer and fluid flow of nanofluids in micro/mini-channel heat exchangers. He developed several courses and labs on thermo/fluids, including advanced courses on thermal systems and electronics cooling. Since Joining Exponent in 2011, he has worked and collaborated on more than twenty projects in a wide variety of applications related to refrigeration and air conditioning systems, heat transfer equipment, insulation materials, induction furnaces, wildland fires, residential fires, smoke distribution, as well as experimentation and CFD simulation.
Hayes N, Jokar A, Ayub Z. Study of carbon dioxide condensation in Chevron plate exchangers: Heat transfer analysis. International Journal of Heat and Mass Transfer 2011; 54:1121–1131.
O'Halloran S, Jokar A. CFD simulation of single-phase flow in plate heat exchangers. ASHRAE Transactions 2011; 117.
Dix J, Jokar A. Fluid and thermal analysis of a microchannel electronics cooler using computational fluid dynamics. Applied Thermal Engineering 2010; 30(8–9):948–961.
Jokar A, Eckels SJ, Hosni MH. Single phase flow in mesochannel compact heat exchangers for air conditioning applications. Heat Transfer Engineering 2010; 31(1):3–16.
Jokar A, Solovitz S. Thermo/fluids curriculum development in a new mechanical engineering program. Proceedings, ASME International Mechanical Engineering Congress, IMECE2010: 37001, Vancouver, BC, Canada 2010.
Jokar A, Hayes N, Ayub Z. Recent developments in CO2 cascade condensers. Proceedings, Sustainable Refrigeration and Heat Pump Technology Conference (International Institute of Refrigeration), Stockholm, Sweden, 2010.
Solovitz S., Jokar A. Micro-particle image velocimetry visualization of water flow in a complex micro-heat exchanger. Journal of Flow Visualization and Image Processing 2009; 16(3):221–236.
Hayes N, Jokar A. Dynalene/water correlations to be used for condensation of CO2 in Brazed Plate Heat Exchangers. ASHRAE Transactions 2009; 115(2):599–616.
Cortez M, Jokar A. Development and testing of a prototype heat sink within a wind tunnel for use in an engineering course. Proceedings, ASME International Mechanical Engineering Congress, IMECE2009: 12084, Lake Buena Vista, FL, 2009.
Saffaraval F, Jokar A. Development of an R245fa electronics cooling system for high heat flux applications. Proceedings, ASME International Mechanical Engineering Congress, IMECE2009: 12076, Lake Buena Vista, FL, 2009.
Suffield S, Jokar A. Modeling the flow of a liquid droplet diffusing into various porous media for inkjet printing applications. Proceedings, ASME International Mechanical Engineering Congress, IMECE2008: 68151, Boston, MA, 2008.
Dix J, Jokar A, Martinsen R. Enhanced microchannel cooling for high-power semiconductor diode lasers. Proceedings, SPIE Photonics West Conference, LASE2008: 6876–6875, San Jose, CA, 2008.
Jokar A. A hands-on approach to teaching thermal systems design. Proceedings, ASME International Mechanical Engineering Congress, IMECE2007: 41540, Seattle, WA, 2007.
Dix J, Jokar A, Martinsen R. Computational modeling for a microchannel electronics cooler. Proceedings, ASME International Mechanical Engineering Congress, Seattle, WA, 2007; IMECE2007: 42971.
Jokar A, Hosni MH, Eckels SJ. Dimensional analysis for the evaporation and condensation of refrigerant R134a in minichannel plate heat exchangers. Applied Thermal Engineering 2006; 26: 2287–2300.
Jokar A. Experimentation and computational fluid dynamics integration in undergraduate fluid mechanics. Proceedings, ASME International Mechanical Engineering Congress, IMECE2006: 15256, Chicago, IL, 2006.
Jokar A, Eckels SJ, Hosni MH. New generation integrated automotive thermal system. SAE Future Transportation Technology Conference, FTT-01-3476, Chicago, IL, 2005.
Jokar A, Hosni MH, Eckels SJ. Correlations for heat transfer and pressure drop of glycol-water and air flows in minichannel heat exchangers. ASHRAE Transactions 2005; 111(2):213–224.
Jokar A, Hosni MH, Eckels SJ. Themal-fluid characteristics of an automotive radiator used as the external heat exchanger in an auto air conditioning system. Proceedings, ASME Heat Transfer Summer Conference, HT2005: 72061, San Francisco, CA, 2005.
Jokar A, Hosni MH, Eckels SJ. A heat pump for automotive applications. 8th International Energy Agency Heat Pump Conference, Session: 7, Las Vegas, NV, 2005. (Published in IEA-HP newsletter 2005; 22).
Jokar A, Eckels SJ, Hosni MH, Gielda TP. Condensation heat transfer and pressure drop of the brazed plate heat exchangers using R134a. Journal of Enhanced Heat Transfer 2004; 11(2):161–182.
Jokar A, Eckels SJ, Hosni MH. Thermo-hydrodynamic of the evaporation of refrigerant R134a in brazed plate heat exchangers. Proceedings, ASME Heat Transfer/Fluids Engineering Summer Conference, HT-FED04: 56573, Charlotte, NC, 2004.
Jokar A, Eckels SJ, Hosni MH. Evaluation of heat transfer and pressure drop for the heater-core in an automotive heat pump system. Proceedings, ASME International Mechanical Engineering Congress, IMECE2004: 60824, Anaheim, CA, 2004.