CFD Optimization Study of High-Efficiency Jet Ejectors

Research was performed to optimize the high-
efficiency jet ejector geometry by varying motive
fluid velocities and mass flow ratio. The high-
efficiency jet ejector was simulated by Fluent
Computational Fluid Dynamics (CFD) software.
In the optimization study of the constant-area jet
ejectors, all parameters were expressed in
dimensionless terms. Dimensionless group analysis
reveals that the research results are valid for any
fluid, operating pressure and geometric scale for a
given motive-stream Mach number and momentum ratio.
The results from the optimization study indicate
that the jet ejector efficiency improves
significantly compared to a conventional jet-ejector
design.
The results also show that substituting a single
optimal jet ejector for a single conventional
ejector reduces the motive stream
consumption by about 10% to 30%, which could
decrease operating costs tremendously.
The explanation of how to implement the optimization
results and selecting the best operating conditions
to minimize the motive stream consumption was
included at the end of the dissertation.

Autorentext

Somsak grew up in Bangkok, Thailand.His current addres is 10800 Clay Rd.,apt#2204;Houston;Texas;USA 77041; Contact Information: (+001)979-739-0650He started his graduate study (Master(2005) and Ph.D.(2008)) in the Department of Chemical Engineering at Texas A&M University in College Station, Texas.

Klappentext

Research was performed to optimize the high-efficiency jet ejector geometry by varying motive fluid velocities and mass flow ratio. The high-efficiency jet ejector was simulated by Fluent Computational Fluid Dynamics (CFD) software. In the optimization study of the constant-area jet ejectors, all parameters were expressed indimensionless terms. Dimensionless group analysis reveals that the research results are valid for anyfluid, operating pressure and geometric scale for a given motive-stream Mach number and momentum ratio.The results from the optimization study indicate that the jet ejector efficiency improves significantly compared to a conventional jet-ejector design. The results also show that substituting a single optimal jet ejector for a single conventional ejector reduces the motive streamconsumption by about 10% to 30%, which could decrease operating costs tremendously.The explanation of how to implement the optimization results and selecting the best operating conditions to minimize the motive stream consumption was included at the end of the dissertation.