Heat and Mass Transfer最新文献_第5页

A 3-dimenional CFD study of boiling in jet impingement 对射流撞击中沸腾现象的三维度 CFD 研究

IF 2.2 4区工程技术

Heat and Mass Transfer Pub Date : 2024-04-26 DOI: 10.1007/s00231-024-03480-1

Mohamed S. Gadala, Fahad Aslam, Abdulrahman Gomaa

{"title":"A 3-dimenional CFD study of boiling in jet impingement","authors":"Mohamed S. Gadala, Fahad Aslam, Abdulrahman Gomaa","doi":"10.1007/s00231-024-03480-1","DOIUrl":"https://doi.org/10.1007/s00231-024-03480-1","url":null,"abstract":"This work conducts a numerical investigation of water jet impingement cooling during the steel quenching process. Although much of the simulation work in the literature relies on two-dimensional analyses, this study developed a three-dimensional CFD simulation model using Ansys-Fluent. The Eulerian mixture formulation with the volume of fluid (VOF) method was employed. It is shown that the developed model accurately simulates the boiling behavior in impingement cooling using circular water jets. The main parameters used in the simulation were: initial surface temperature of 700 °C, and jet velocity of (0.4,m/s) impinging from a nozzle at (8,mm) height from the heated surface. The 3D mesh has been refined in a way to maintain a ({y}^{+}) value of 1 at the heated surface to capture the physics on the surface and to ensure that the viscous boundary layer is captured. Results such as temperature drop, boiling curve, and bubble frequency were presented and verified with the available experimental work in the literature. The developed mixture simulation using Ansys-Fluent has demonstrated its capability to numerically simulate the temperature history and boiling curves in the impingement process. This advancement will facilitate the study of numerous industrial parameters that are challenging to investigate experimentally.","PeriodicalId":12908,"journal":{"name":"Heat and Mass Transfer","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140799987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on the heat and mass transfer characteristics of wet air and solution on the surface of corrugated packings at lower ambient pressure 研究湿空气和溶液在较低环境压力下波纹填料表面的传热和传质特性

IF 2.2 4区工程技术

Heat and Mass Transfer Pub Date : 2024-04-25 DOI: 10.1007/s00231-024-03478-9

Zhang Liang, Haoyue Li

引用次数: 0

Experimental Investigation of Taylor bubbles in a gas-liquid column with pulsed gas feed 脉冲气体进料气液塔中泰勒气泡的实验研究

IF 2.2 4区工程技术

Heat and Mass Transfer Pub Date : 2024-04-23 DOI: 10.1007/s00231-024-03476-x

Elahe Shafiee, Maysam Saidi

引用次数: 0

Thermohydraulic performance of winglets inside a rectangular microchannel 矩形微通道内小翼的热液压性能

IF 2.2 4区工程技术

Heat and Mass Transfer Pub Date : 2024-04-23 DOI: 10.1007/s00231-024-03481-0

Tarang Agarwal

引用次数: 0

14th Heat exchanger fouling and cleaning conference 第 14 届热交换器结垢和清洁会议

IF 2.2 4区工程技术

Heat and Mass Transfer Pub Date : 2024-04-22 DOI: 10.1007/s00231-023-03408-1

Andrea Luke

引用次数: 0

New water-stainless steel rod-plate heat pipe: model and experiments 新型水-不锈钢棒-板热管：模型与实验

IF 2.2 4区工程技术

Heat and Mass Transfer Pub Date : 2024-04-15 DOI: 10.1007/s00231-024-03471-2

Elvis Falcão de Araújo, Juan Pablo Flórez Mera, Luis H. R. Cisterna, Márcia Barbosa Henriques Mantelli

{"title":"New water-stainless steel rod-plate heat pipe: model and experiments","authors":"Elvis Falcão de Araújo, Juan Pablo Flórez Mera, Luis H. R. Cisterna, Márcia Barbosa Henriques Mantelli","doi":"10.1007/s00231-024-03471-2","DOIUrl":"https://doi.org/10.1007/s00231-024-03471-2","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>This work proposes a novel flat heat pipe technology, namely the rod-plate heat pipe, formed by the diffusion bonding of a set of parallel rods, of around 8 mm diameter, between flat plates of approximately 500 × 60 × 2 mm3. This design is inspired by the mini wire-plate heat pipe concept. This work is the first in the literature to apply this technology to large size heat pipes. A theoretical model is devised and used to predict the fluid distribution along the heat pipe, detect regions of flooding and dry-out and determine the best charging volume. Experiments are performed with a stainless-steel device operating in horizontal orientation with water as working fluid. Electrical cartridge resistances play the role of the evaporator heat source, while the condenser is cooled by either natural convection and radiation or heat exchangers linked to a thermal bath. For the experiments using a device with an exposed condenser, the minimum thermal resistance is 0.147 °C/W, for 88.50 W for heat input. The operation temperature increases with heat input up to 326.56 °C for a heat load of 191.40 W. The thermal resistances of the heat pipe cooled by heat exchangers have a minimum of 0.123 °C/W at 171.57 W heat transport rate, for a 40 °C thermal bath temperature. The theoretical results and data obtained so far corroborate the feasibility of this technology, with devices able to transfer up to 22.18 W per groove.","PeriodicalId":12908,"journal":{"name":"Heat and Mass Transfer","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140561323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pool boiling heat transfer performance of low-GWP refrigerant R-513A on smooth tube 低全球升温潜能值制冷剂 R-513A 在光滑管上的池沸传热性能

IF 2.2 4区工程技术

Heat and Mass Transfer Pub Date : 2024-04-15 DOI: 10.1007/s00231-024-03474-z

Abhishek Kumar, Shou-Yin Yang

引用次数: 0

Experimental analysis of a heat pipe-assisted flexible heat transfer device 热管辅助柔性传热装置的实验分析

IF 2.2 4区工程技术

Heat and Mass Transfer Pub Date : 2024-04-09 DOI: 10.1007/s00231-024-03475-y

Kannan Pandi, V. M. Jaganathan

{"title":"Experimental analysis of a heat pipe-assisted flexible heat transfer device","authors":"Kannan Pandi, V. M. Jaganathan","doi":"10.1007/s00231-024-03475-y","DOIUrl":"https://doi.org/10.1007/s00231-024-03475-y","url":null,"abstract":"The present study elucidates the experimental investigations on a novel flexible heat transfer device that can be used in a wide range of modern electronic device cooling applications which demand flexibility. The objective of the present is to address the challenges encountered by current flexible heat transfer devices, including concerns related to out-gassing and the permeation of non-condensable gases. These issues ultimately contribute to the deterioration of the long-term dependability of such devices. The present study provides an analysis of the steady-state performance of the flexible heat transfer device under various heat loads and orientations (0°, 45°, and 90° angles). Using COMSOL Multiphysics 6.1, numerical simulations are performed to explain the dynamics of heat transfer of the flexible heat transfer device developed. The performance is evaluated in terms of thermal resistance, equivalent thermal conductivity, and average temperature difference across the evaporator and condenser. Under steady-state operation, it has been determined that the flexible heat transfer device exhibits a minimum thermal resistance of 2.3 °C/W. Additionally, a maximum effective thermal conductivity of 2407 W/mK has been reported for a bending angle of 45°, which is six times more than relevant flexible heat transfer devices, such as copper thermal straps.","PeriodicalId":12908,"journal":{"name":"Heat and Mass Transfer","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140561504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Transient heat flux assessment using a platinum thin film sensor for short-duration applications 使用铂薄膜传感器评估短时热通量

IF 2.2 4区工程技术

Heat and Mass Transfer Pub Date : 2024-04-08 DOI: 10.1007/s00231-024-03473-0

Sumedh Dongare, Ravi K. Peetala, Trushar B. Gohil, Nidhish Agrawal, Akash Jadhav

{"title":"Transient heat flux assessment using a platinum thin film sensor for short-duration applications","authors":"Sumedh Dongare, Ravi K. Peetala, Trushar B. Gohil, Nidhish Agrawal, Akash Jadhav","doi":"10.1007/s00231-024-03473-0","DOIUrl":"https://doi.org/10.1007/s00231-024-03473-0","url":null,"abstract":"The rapid fluctuations in heat transfer rates make it challenging to determine the surface temperature history and the estimation of accurate heat generation in research applications such as IC engines, gas turbines, and high-speed space vehicles. Therefore, thin-film heat flux sensors (TFHFS) are generally used to measure the heat flux in such applications due to their high sensitivity and quick response time. The present study demonstrates that increasing the annealing heat treatment temperature will enhance the adhesion of the thin film and the capabilities of these hand-made TFHFS for transient measurements at low temperatures and for short periods. In the present work, TFHFS is fabricated in-house using platinum as a sensing element and Macor as an insulating substrate. The sensitivity (S) and temperature coefficient of resistance (TCR) are estimated using an oil batch calibration technique. At the same time, the performance of TFHFS is tested in a dynamic convective environment. The TFHFS is exposed to the convective environment using a designed calibration set-up, and their transient heat fluxes are computed by conducting several trials. Additionally, the numerical solution has been accomplished using various experimental parameters. In comparison to the outcomes of the experimental method, it is observed that the average fluctuating temperature and mean surface heat flux have an inaccuracy of 0.33% and 4.17% respectively.","PeriodicalId":12908,"journal":{"name":"Heat and Mass Transfer","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140561407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

General correlation of two-phase frictional pressure drop inside smooth tubes 光滑管道内两相摩擦压降的一般相关性

IF 2.2 4区工程技术

Heat and Mass Transfer Pub Date : 2024-04-04 DOI: 10.1007/s00231-024-03470-3

I Wayan Sugita, Afdhal Kurniawan Mainil, Akio Miyara

{"title":"General correlation of two-phase frictional pressure drop inside smooth tubes","authors":"I Wayan Sugita, Afdhal Kurniawan Mainil, Akio Miyara","doi":"10.1007/s00231-024-03470-3","DOIUrl":"https://doi.org/10.1007/s00231-024-03470-3","url":null,"abstract":"Calculating a two-phase pressure drop is required in many fields. A general and accurate correlation is still needed, although numerous studies of frictional pressure drop correlations have been conducted. Therefore, a wide range of experimental data points were collected on the two-phase pressure drop of smooth tubes, 2012 points, covering 16 refrigerants with tube diameters ranging from 1.88 to 12 mm. The experimental data points were compared and evaluated with nine widely used correlations and models. The results show that the (Kim and Mudawar in Journal of Int J Heat Mass Transf 55:3246-3261, 2012) correlation gives the best prediction, followed by the Wang et al. (Exp Therm Fluid Sci 15:395–405, 1997) correlation and Friedel (European Two-Phase Flow Group Meeting, Ispra, Italy, 1979) correlation with mean deviations of 26.94%, 27.26% and 29.76%, respectively. A general two-phase frictional pressure drop correlation is proposed. The proposed correlation is validated against the database and compared with other correlations. The proposed correlation agrees better with the database than the others, with an absolute mean deviation of 19.84%.","PeriodicalId":12908,"journal":{"name":"Heat and Mass Transfer","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140561512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0