Experimental and Numerical Investigation of the Unsteady Flow around a Human Underwater Undulating Swimmer

2012 ◽  
pp. 293-308 ◽  
Author(s):  
Stefan Hochstein ◽  
Steffen Pacholak ◽  
Christoph Brücker ◽  
Reinhard Blickhan
Keyword(s):  
Unsteady Flow ◽  
Numerical Investigation

Numerical investigation of the unsteady flow characteristics of human body thermal plume

2016 ◽  
Vol 9 (6) ◽  
pp. 677-687 ◽  
Author(s):  
Yulong Liu ◽  
Yijia Zhao ◽  
Zhengxian Liu ◽  
Jisheng Luo
Keyword(s):  
Unsteady Flow ◽  
Numerical Investigation ◽  
Human Body ◽  
Flow Characteristics ◽  
Thermal Plume

scholarly journals NUMERICAL INVESTIGATION OF A TONE NOISE OF THE FAN WITH CASING TREATMENT

2021 ◽  
pp. 24-38
Author(s):  
Yaroslav Druzhinin ◽  
◽  
Viktor Mileshin ◽  
Anton Rossikhin ◽  
◽  
...  
Keyword(s):  
Flow Field ◽  
Unsteady Flow ◽  
Numerical Investigation ◽  
Significant Influence ◽  
Aerodynamic Characteristics ◽  
Operational Conditions ◽  
Casing Treatment ◽  
Harmonic Method ◽  
Surge Line ◽  
Bypass Ratio

Numerical investigation of influence of a slot-type casing treatment on acoustic and aerodynamic characteristics of the fan of ultra-high bypass ratio turbofan is presented. The investigation was performed using NUMECA FINE/Turbo solver. NLH harmonic method was used to simulate the effect of casing treatment on unsteady flow field in the turbomachine. Two operational conditions were investigated – “sideline” and “approach”. The attention for the first operational condition was paid for aerodynamic characteristics. Significant influence of casing treatment on them was found especially near the surge line. At the “approach” operational conditions the attention was paid for the proper calculation of tone noise. It was shown that the installation of casing treatment leads to decrease of power of tone noise radiated through the inlet. However the power of the tone noise, radiated through the nozzle, and also the overall power of tone noise increase.

Numerical Investigation of Flow around a Triangle Cylinder Using a Multiscale Turbulence Model

2013 ◽  
Vol 444-445 ◽  
pp. 253-258
Author(s):  
He Dong ◽  
Ge Gao ◽  
Zhi Qiang Li ◽  
Yang Yang Tang ◽  
Huan Xu ◽  
...  
Keyword(s):  
Unsteady Flow ◽  
Numerical Method ◽  
Numerical Investigation ◽  
Strouhal Number ◽  
Turbulence Model ◽  
Vortex Shedding ◽  
Average Method ◽  
Variable Interval ◽  
Computational Results ◽  
Time Average

The unsteady flow around a triangle cylinder was simulated using the multiscale turbulence model based on the variable interval time average method. The numerical method used in this simulation is an unstructured staggered mesh scheme. The computational results show that the multiscale turbulence model can successfully simulate vortex shedding characteristics. The Strouhal number and time-averaged velocity profiles also agree better with experiments than that of the standard k-ε model.

Sign in / Sign up

Export Citation Format

Share Document