VTOL aerodynamic and performance including take-off, hover, transition, cruise, L/D, power requirement, etc.
Integrated fan in wing VTOL vehicles for accurate hover power loading and cruise/transition L/D prediction
Aerodynamics analysis for entire airplane, including lift and drag coefficient, wing-body integration, angle of attack and boundary layer separation, tip vortices, wing, tail, and fuselage shape optimization, engine exhaust and pusher propeller interaction, axisymmetric and unsteady aerodynamic loading during pitch or yaw, boundary layer ingestion near inlet duct, effects of turbulence model on wing-fuselage boundary layer separation prediction, etc.
Integrated engineering analysis for propulsive systems
Axial fan and compressor
Ducted fan sizing, thrust, and power optimization
Aviation CAM shaft engine with jet fuel spray injection, evaporation and combustion
Correlate analysis, wind tunnel, and other aerodynamic test data, identify mechanisms to improve test setup and aerial vehicle designs.
Reduce windage power loss in large power generation and high speed bearings using air or refrigerant by 20-30%
Fluid-Structure Interaction
Squeeze film damper – damper deformation due to shaft orbit is off-center when supports load
Reciprocating compressor – intake and exhaust valve opening, closing, and deformation in a compression cycle
Automotive fuel control actuator – material rupture in pressurizing phase of fuel injection
Foil bearing loading – bearing deformation with heavy foil load
Jet fuel dispensing turbine valves – pressure regulated fuel valves deformation to allow jet fuel passing through each stage
Engine brake system for heavy vehicle – butterfly valve deformation in an engine brake
Vena Cava filter – blood vessel deformation and filter motion in blood stream
Turbomachinery
Multi-stage marine compressor
High pressure ratio (~ 9.0) single stage compressor
Turbine blade cooling and conjugate heat transfer analysis, including hundreds of cooling channels
Single stage radial turbine performance analysis
Zero axial thrust, large on-board pump
Uniform exit flow design for a jet-ski axial pump
High efficiency automotive turbocharger
Blade eigen mode and flutter analysis
Innovative wind turbine design and analysis
Fan cooling efficiency for nuclear power plant
Multi-Phase Flow
Sand particles tracking for on-board heat exchanger
Spray particles injection, evaporation, and combustion for aviation CAM shaft engine
Fluidized bed reactor with silicone particles
Sound propagation in gaseous bubbles and liquid mixture
Multi-phase separation method to produce pure hydrogen and oxygen from water
Droplet injection, evaporation and species transport and diffusion in chromatography systems
Slugging of large gas pockets in liquid
Diesel fuel injector cavitation and vapor bubble growth
Targeted solid melting with dual pulsating arc heating
Solid sludge in a large sediment tank with jet mixing
Coal particle combustion and soot formation
Local and global boiling including vapor bubble generation, aggregation, transportation, breakup, local dried out, critical heat flux, annular mist, etc. in a liquid cooled micro-channel for high power electronics. Published in the following paper
Heat transfer
Conjugate heat transfer analysis (CHT) for electric motor cooling, cold plate, electronic package including PCB and solder, optical equipment with internal laser heat source, blood plasma and platelet separator, radiator and cooling fan, etc.
Data center cooling analysis for arrays of server rack using different cooling configurations
HVAC analysis for building, warehouse, office, large public gym, theater, etc.
Liquid temperature distribution in several hundred submerged photomultiplier tubes (heat source) in a large underground tank to within 1°C
Mixing
Mixing of multiple materials in using traditional agitator in tank
Traverse jet injection into an agitator mixing tank
Mixing and diffusion of leaked hazardous chemicals
Liquid jet injection and sloshing in a gaseous reactor
Innovative pharmaceutical mixing tank with oscillating orifice plates producing cyclic jets