Application and Numerical Simulation on Water Mist Cooling for Urban Environment Regulation

2010 ◽  
pp. 469-480 ◽  
Author(s):  
Junfeng Wang ◽  
Xincheng Tu ◽  
Zhentao Wang ◽  
Jiwei Huang
Keyword(s):  
Numerical Simulation ◽  
Urban Environment ◽  
Water Mist ◽  
Mist Cooling ◽  
Environment Regulation

scholarly journals Analysis of Infrared Radiation Intensity by Water-Mist Spraying in Ship Exhaust System

2021 ◽  
Vol 2112 (1) ◽  
pp. 012019
Author(s):  
Zhongke Sun ◽  
Zhen Wang ◽  
Zhongwei Chen ◽  
Zhihua Liu ◽  
Mo Liu ◽  
...  
Keyword(s):  
Radiation Intensity ◽  
Infrared Radiation ◽  
Exhaust System ◽  
Water Mist ◽  
Mist Cooling

Abstract The infrared radiation intensity in 3~5μm of conventional ship exhaust system are so severe [1] that can be easily captured by detector. Therefore, it’s necessary to take measure like spraying water mist to decrease temperature of exhaust system in order to decrease infrared radiation intensity. In this paper, the calculation of infrared radiation intensity of conventional ship exhaust system with water-mist spraying will be given. The results show that the average and maximum infrared radiation intensity of the exhaust system can be reduced by 90.3% and 95.7% after water mist cooling.

scholarly journals Microstructural Characteristics and Mechanical Properties of Water Cooling Bobbin-Tool Friction Stir Welded 6063-T6 Aluminum Alloy

2018 ◽  
Vol 206 ◽  
pp. 03002 ◽  
Author(s):  
Yunqiang Zhao ◽  
Chungui Wang ◽  
Chunlin Dong
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Friction Stir Welding ◽  
Water Mist ◽  
Water Cooling ◽  
Microstructural Characteristics ◽  
Welding Temperature ◽  
Weld Formation ◽  
Friction Stir ◽  
Mist Cooling

In this study, a novel welding method called water cooling bobbin-tool friction stir welding (WBT-FSW) was developed. 4 mm-thick 6063-T6 aluminum alloy sheets were successfully jointed by WBT-FSW. Comparative studies on macro/microstructural characteristics and mechanical properties of the WBT-FSW and conventional bobbin-tool friction stir welding (BT-FSW) joints were carried out. The results indicated that the water mist cooling can significantly decrease the welding temperature and improve both the weld formation and the mechanical properties of the joint. The tensile strength of the WBT-FSW joint was 11.4% higher than that of BT-FSW joint.

scholarly journals A Numerical Approach of the Influence of Water Temperature in the Extinction of Fire Developed in Closed Spaces

2022 ◽  
Vol 960 (1) ◽  
pp. 012006
Author(s):  
P Cozma ◽  
D Pavel ◽  
C A Safta ◽  
A Chisacof
Keyword(s):  
Numerical Simulation ◽  
Fire Behavior ◽  
Numerical Approach ◽  
Water Mist ◽  
Simulation Approach ◽  
Influence Of Water ◽  
Different Temperatures ◽  
Fire Extinguish ◽  
Different Diameters ◽  
In Fire

Abstract The aim of this work is to make a visual investigation of the fire behavior during the extinguish process with water mist at different temperatures, different diameters of the nozzle and different angles of diffusion jet, too. It was used a numerical simulation approach to analyze 24 scenarios regarding the influence of mist water in fire extinguish process. The main test was focused on a given enclosure with dimensions of 1.0 × 1.0 × 3.0 m and the fire source placed inside, in the middle. The enclosure is considered opened on the upper part. From the numerical simulation values, we concluded the best scenario in fire extinguish process using water mist.

scholarly journals Effect of the Flow of Large Water Droplets on the Water Mist Sprays

2014 ◽  
Vol 2 (2) ◽  
pp. 27-37
Author(s):  
László Beda ◽  
Csaba Szikra
Keyword(s):  
Numerical Simulation ◽  
Velocity Field ◽  
Large Diameter ◽  
Water Mist ◽  
Cfd Model ◽  
Water Droplets ◽  
Numerical Studies ◽  
Dynamic Simulator ◽  
Fire Dynamic Simulator ◽  
Large Water

Abstract The purpose of this study is to investigate the velocity field generated by water droplets with relatively large diameter that has great effect on the movement of several orders of magnitude smaller particles. A CFD model, Fire Dynamic Simulator (FDS) version 5.5.3 was used for the numerical simulation. The data obtained from the numerical studies are analysed.

Numerical simulation and mechanism analysis of gas explosion suppression by ultrasonic water mist

2019 ◽  
Vol 41 (23) ◽  
pp. 2821-2833 ◽  
Author(s):  
Fahui Wang ◽  
Wei Chen ◽  
Xiaoping Wen ◽  
Weilong Zhao ◽  
Zhichao Liu
Keyword(s):  
Numerical Simulation ◽  
Water Mist ◽  
Mechanism Analysis ◽  
Gas Explosion ◽  
Explosion Suppression

NUMERICAL STUDY OF AIR-ATOMIZED WATER MIST COOLING OF A HEATED FLAT PLATE

2019 ◽  
Vol 50 (12) ◽  
pp. 1205-1229
Author(s):  
Vikash Kumar Singh Chauhan ◽  
Dushyant Singh
Keyword(s):  
Flat Plate ◽  
Numerical Study ◽  
Water Mist ◽  
Mist Cooling ◽  
Atomized Water
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