An ultra-smooth planarization method for controlling fluid behavior in cluster magnetorheological finishing based on computational fluid dynamics

Author(s):  
Bin Luo ◽  
Qiusheng Yan ◽  
Jingfu Chai ◽  
Wenqing Song ◽  
Jisheng Pan
Author(s):  
Pedro Esteves Duarte Augusto ◽  
Marcelo Cristianini

Thermal processing is one of the safest and most used methods of food preservation. Although the computational fluid dynamics (CFD) has been used by several authors for liquid food thermal processing evaluation, just a few studies have compared the data obtained by CFD with experiments. The present work evaluated a liquid model food pasteurization in two commercial bottles using CFD. The model validation was carried out by comparing the obtained thermal profile with experimental data. The fluid behavior during heating and cooling was detailed. The data obtained using CFD described well the experimental processing, which suggest the possibility of using CFD for temperature profile evaluation in thermal processing of packaged convective foods.


2019 ◽  
Vol 25 (4) ◽  
pp. 498-505 ◽  
Author(s):  
Changkyoo Choi ◽  
Chulmin Lee ◽  
No-Suk Park ◽  
In S. Kim

This study analyzes the velocity and pressure incurred by protruding shapes installed within the inlet part of a pressurized membrane module during operation to determine the fluid flow distribution. In this paper, to find the flow distribution within a module, it investigates the velocity and pressure values at cross-sectional and outlet planes, and 9 sections classified on outlet plane using computational fluid dynamics. From the Reynolds number (Re), the fluid flow was estimated to be turbulent when the Re exceeded 4,000. In the vertical cross-sectional plane, shape 4 and 6 (round-type protrusion) showed the relatively high velocity of 0.535 m/s and 0.558 m/s, respectively, indicating a uniform flow distribution. From the velocity and pressure at the outlet, shape 4 also displayed a relatively uniform fluid velocity and pressure, indicating that fluid from the inlet rapidly and uniformly reached the outlet, however, from detailed data of velocity, pressure and flowrate obtained from 9 sections at the outlet, shape 6 revealed the low standard deviations for each section. Therefore, shape 6 was deemed to induce the ideal flow, since it maintained a uniform pressure, velocity and flowrate distribution.


2016 ◽  
Vol 64 (S 01) ◽  
Author(s):  
J. Engelke ◽  
A.-F. Popov ◽  
S. Partovi ◽  
M. Karck ◽  
A. Simon ◽  
...  

2016 ◽  
Vol 14 (3) ◽  
Author(s):  
Candra Damis Widiawaty ◽  
Ahmad Indra Siswantara ◽  
Gun Gun R Gunadi

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