scholarly journals Bubble Dynamics in a Narrow Rectangular Channel

2018 ◽  
Author(s):  
Xu Jianjun ◽  
Xie Tianzhou ◽  
Chen Bingde ◽  
Bao Wei
Keyword(s):  
Bubble Dynamics ◽  
Rectangular Channel

Experimental visualization of sliding bubble dynamics in a vertical narrow rectangular channel

2013 ◽  
Vol 261 ◽  
pp. 156-164 ◽  
Author(s):  
JianJun Xu ◽  
BingDe Chen ◽  
YanPing Huang ◽  
Xiao Yan ◽  
DeWen Yuan
Keyword(s):  
Bubble Dynamics ◽  
Rectangular Channel

Numerical investigation of thermal performance of key components of electric vehicles using nucleate boiling

2021 ◽  
pp. 1-33
Author(s):  
Shyamkumar P.I. ◽  
Suneet Singh ◽  
Atul Srivastava ◽  
Milan Visaria
Keyword(s):  
Heat Transfer ◽  
Bubble Dynamics ◽  
Cooling System ◽  
Flow Boiling ◽  
Rectangular Channel ◽  
Nucleate Boiling ◽  
Single Bubble ◽  
Scavenging Effect ◽  
Multiple Bubbles ◽  
Straight Flow

Abstract An efficient thermal management system is desirable for improving the performance of key components of electric vehicle (EV), such as battery packs and Insulated-Gate Bipolar Transistors (IGBTs). This paper investigates the application of single bubble nucleate boiling heat transfer in battery and IGBT component cooling pack. A semi mechanistic flow boiling model, which combines four main sub-models i.e. phase change model, micro-region model, Marangoni model, and contact angle model is developed to get the insight of various subprocesses like bubble inception, growth, departure, scavenging effect while the bubble departs and condensation. For model validation, simulations are carried out for single bubble flow boiling in a vertical rectangular channel and compared against the experimental data available in the literature. Thereafter, simulations are carried out for the battery and IGBT cooling pack to understand the physical phenomena associated with nucleate boiling in such systems. The choice of a single vapor bubble vis-à-vis multiple bubbles has been based on the objective of validating the developed numerical model. An enhancement of ∼30% in heat transfer is achieved for both battery and IGBT components when the system is subjected to a nucleate boiling cooling regime as compared to a conventional single-phase convection cooling system. Nusselt number variation due to the single bubble movement along the coolant path is studied in detail for both serpentine-shaped cooling path in a battery and straight flow path in an IGBT. Moreover, the influence of Reynolds number over bubble dynamics is analyzed.

Bubble dynamics and deformation in microgravity

2001 ◽  
Vol 11 (PR6) ◽  
pp. Pr6-231-Pr6-238
Author(s):  
C. Colin ◽  
J. Fabre
Keyword(s):  
Bubble Dynamics

On the Exact Soliton Solutions of Some Nonlinear PDE by Tan-Cot Method

2018 ◽  
Vol 5 (1) ◽  
pp. 31-36
Author(s):  
Md Monirul Islam ◽  
Muztuba Ahbab ◽  
Md Robiul Islam ◽  
Md Humayun Kabir
Keyword(s):  
Solitary Wave ◽  
Acoustic Waves ◽  
Water Waves ◽  
Wave Equations ◽  
Rectangular Channel ◽  
Soliton Solutions ◽  
Boussinesq Equations ◽  
Travelling Wave ◽  
Ion Acoustic Waves ◽  
Analytical System

For many solitary wave applications, various approximate models have been proposed. Certainly, the most famous solitary wave equations are the K-dV, BBM and Boussinesq equations. The K-dV equation was originally derived to describe shallow water waves in a rectangular channel. Surprisingly, the equation also models ion-acoustic waves and magneto-hydrodynamic waves in plasmas, waves in elastic rods, equatorial planetary waves, acoustic waves on a crystal lattice, and more. If we describe all of the above situation, we must be needed a solution function of their governing equations. The Tan-cot method is applied to obtain exact travelling wave solutions to the generalized Korteweg-de Vries (gK-dV) equation and generalized Benjamin-Bona- Mahony (BBM) equation which are important equations to evaluate wide variety of physical applications. In this paper we described the soliton behavior of gK-dV and BBM equations by analytical system especially using Tan-cot method and shown in graphically. GUB JOURNAL OF SCIENCE AND ENGINEERING, Vol 5(1), Dec 2018 P 31-36

Enhancement of Heat Transfer in a Short Rectangular Channel with Substantial Deflection of Inlet Velocity from Axial Direction

2005 ◽  
Vol 36 (4) ◽  
pp. 311-318 ◽  
Author(s):  
R. Bunker ◽  
M. YA. Belen'kii ◽  
M. A. Gotovskii ◽  
B. S. Fokin ◽  
S. A. Isaev
Keyword(s):  
Heat Transfer ◽  
Rectangular Channel ◽  
Axial Direction ◽  
Enhancement Of Heat Transfer ◽  
Inlet Velocity

Numerical Investigation of Bubble Dynamics in Acoustic Cavitation Phenomena

2005 ◽  
Vol 36 (3) ◽  
pp. 171-179
Author(s):  
G. K. Ivanitskii
Keyword(s):  
Numerical Investigation ◽  
Bubble Dynamics ◽  
Acoustic Cavitation
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