Calculation of Metzner Constant for Double Helical Ribbon Impeller by Computational Fluid Dynamic Method

2008 ◽  
Vol 16 (5) ◽  
pp. 686-692 ◽  
Author(s):  
Minge ZHANG ◽  
Lühong ZHANG ◽  
Bin JIANG ◽  
Yuguo YIN ◽  
Xingang LI
Keyword(s):  
Computational Fluid Dynamic ◽  
Dynamic Method ◽  
Fluid Dynamic ◽  
Helical Ribbon

scholarly journals A COMPARISON STUDY ON THE RESISTANCE CALCULATION OF PLANNING BOAT

2021 ◽  
Vol 5 (12) ◽  
Author(s):  
Do Quang Khai ◽  
Nguyen Thi Thu Quynh ◽  
Nguyen Manh Chien
Keyword(s):  
Computational Fluid Dynamic ◽  
Water Surface ◽  
High Speed ◽  
Dynamic Method ◽  
Fluid Dynamic ◽  
Empirical Method ◽  
Comparison Study ◽  
Hydrodynamic Problem ◽  
Lifting Force ◽  
Calculation Results

Calculation of the resistance and trim of highspeed boat at planning regime is a complex hydrodynamic problem. At the planning regime, with the aid of lifting force, the boat is lifted over the water surface with high trim angle. Many methods have been applied to calculate the resistance and the trim of the high-speed boat at this planning regime. This paper will study the two typical methods, the first one is empirical method by Savitsky [1] and the second one is the computational fluid dynamic method (CFD). The calculation results of two methods are compared with experimental results.

NUMERICAL STUDY OF NANOFLUID FLOW AND HEAT TRANSFER IN MICROCHANNELS

2006 ◽  
Vol 05 (06) ◽  
pp. 747-752 ◽  
Author(s):  
DIAO XU ◽  
LUNSHENG PAN
Keyword(s):  
Heat Transfer ◽  
Shear Stress ◽  
Computational Fluid Dynamic ◽  
Dynamic Method ◽  
Numerical Study ◽  
Fluid Dynamic ◽  
Nanofluid Flow ◽  
Viscous Shear Stress ◽  
Flow And Heat Transfer ◽  
Viscous Shear

It is known that the metal nanoparticles, when dispersed in fluids to form nanofluids, improve the heat conductivity of the fluids. The present paper studies the flow and heat transfer of the nanofluids in a microchannel by using Computational Fluid Dynamic method. It is found that although the nanoparticles enhance the heat transfer of the fluids about certain percent, the nanoparticles also cause a big increase of viscous shear stress on the wall, which causes an increase of the power consumption for driving the nanofluids through the microchannel.

Sign in / Sign up

Export Citation Format

Share Document