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Journal articles on the topic 'Coolant fluid dynamics'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Asep Koswara and Djoko Karmiadji. "Analisis Perpindahan Panas Fluida Pendingin Nanofluids pada Aftercoller Dengan Computational Fluid Dynamics." Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin 11, no. 3 (2021): 178–85. http://dx.doi.org/10.35814/teknobiz.v11i3.2905.

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Mempertimbangkan meningkatnya permintaan dalam teknologi modern, telah dikembangkan dispersi sejumlah kecil zat padat berukuran nano dalam cairan yang disebut nanofluids yang dapat meningkatkan konduktivitas termal fluida. Karakteristik fluida ini menunjukkan sifat termal yang lebih besar dibandingkan dengan cairan pendingin konvensional untuk aplikasi pemindah panas yang banyak digunakan saat ini. Salah satu jenis nanofluids yang banyak digunakan adalah Al2O3 (alumina). Penelitian ini untuk melihat sejauh mana dampak penggunaan nanofluids pada proses pendinginan udara yang digunakan untuk pro

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2

Deriszadeh, Ali, and Filippo de Monte. "On Heat Transfer Performance of Cooling Systems Using Nanofluid for Electric Motor Applications." Entropy 22, no. 1 (2020): 99. http://dx.doi.org/10.3390/e22010099.

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This paper studies the fluid flow and heat transfer characteristics of nanofluids as advance coolants for the cooling system of electric motors. Investigations are carried out using numerical analysis for a cooling system with spiral channels. To solve the governing equations, computational fluid dynamics and 3D fluid motion analysis are used. The base fluid is water with a laminar flow. The fluid Reynolds number and turn-number of spiral channels are evaluation parameters. The effect of nanoparticles volume fraction in the base fluid on the heat transfer performance of the cooling system is s

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Yamaguchi, Yukio, and Kenji Amagai. "OS23-7 Development of Binary Refrigeration System Using CO2 Coolant for Freezing Show Case(Thermo-fluid dynamics(2),OS23 Thermo-fluid dynamics,FLUID AND THERMODYNAMICS)." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2015.14 (2015): 284. http://dx.doi.org/10.1299/jsmeatem.2015.14.284.

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4

Ahmad Fawwaz Irsyaad Ahmad Farhan, Nur Atiqah Mohamad Aziz, Hassan Mohamed, Bidattul Syirat Zainal, and Hazlina Junoh. "Investigation of the Thermal Performance of Water and Aluminum Oxide Nanofluid as a Coolant for Solar Panels." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 106, no. 2 (2023): 87–102. http://dx.doi.org/10.37934/arfmts.106.2.87102.

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A solar panel, also known as a photovoltaic (PV) panel, converts photons from sunlight into usable energy. However, panel warming during the day limits voltage production and results in energy-electricity waste. The efficiency of this PV panel's cooling system utilizing water and aluminum oxide (Al2O3) nanofluid was simulated and assessed using Computational Fluid Dynamics (CFD). This research examines the thermal performance of temperature differences between uncooled, water-cooled, and Al2O3 nanofluid-cooled solar panels. To find the lowest temperature of the solar panel achieved, the mass f

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5

Jin, Zhihao. "Advancement of Liquid Immersion Cooling for Data Centers." Highlights in Science, Engineering and Technology 97 (May 28, 2024): 321–27. http://dx.doi.org/10.54097/4fbbk041.

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With the increasing processing capabilities of data centers, the demand for advanced cooling has been increased, positioning liquid immersion cooling systems as a focal point due to their effectiveness and environmental benefits. This paper reviews the current state and prospects of liquid immersion cooling technologies for data centers by paper analyzing. The research spans the optimization of cooling technology parameters, material and coolant performance, as well as system level integration and thermal management. The characteristics analysis of liquids and supercritical fluids underscores

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6

Bhise, Dipali K., Bhushan T. Patil, and Vasim A. Shaikh. "Air Assisted Atomization Characterization of Biodegradable Fluid Using Microlubrication Technique." Materials Science Forum 1019 (January 2021): 211–17. http://dx.doi.org/10.4028/www.scientific.net/msf.1019.211.

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In microlubrication, effective spray cooling is generally dependent on the atomization process. Air assisted atomizer is commonly used in many industrial applications because even at low-pressure fuel or coolant supply, it can create a fine spray formation. Viscosity force resists the deformation of liquid ligaments into a droplet. This increase in viscosity creates a bigger droplet size. If the density of the coolant is more, it will resist the acceleration and results in a bigger droplet. Properties of coolant such as viscosity, density, and surface tension are important and will affect the

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7

Wang, Zixuan, Zhengyu Sun, Yinhao Huang, Tianbiao Yu, and Jun Zhao. "Design and Preparation of a Self-Inhaling Internal Cooling Grinding Wheel with a Leaf Order Arrangement Structure." Applied Sciences 15, no. 1 (2024): 44. https://doi.org/10.3390/app15010044.

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Grinding wheels are important tools for precision machining. Traditional grinding wheels have issues such as high grinding forces and temperatures on the machined surface, and excessive use of grinding fluids often leads to significant waste. To solve such problems, this paper proposes a self-inhaling internal cooling structured grinding wheel with a leaf order arrangement based on laser cladding technology, by which the “air barrier effect” in grinding is avoided. In this study, the structure of the grinding wheel substrate, as well as the arrangement of abrasive grain clusters, were optimize

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8

Karthikraja, M., P. Kalidoss, S. Anbu, and P. Prabakaran. "Enhanced cooling techniques for Inconel 718 drilling using nano-ionic liquid coolants." Latin American Applied Research - An international journal 55, no. 3 (2025): 333–39. https://doi.org/10.52292/j.laar.2025.3559.

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The manufacturing industry has thoroughly Examined the use of cutting fluids improved by nanotechnology that have higher heat conductivity to increase the efficiency of drilling operations. Due to their diverse physical & chemical characteristics and environmental compatibility, ionic liquids show significant promise for use as cutting fluids. This study examines how well different combinations of ionanofluids with nanoparticles perform as cutting fluids in drilling, by analyzing heat transfer through computational fluid dynamics and Ansys Fluent software. The thermal properties of a mixtu

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9

Deriszadeh, Ali, and Filippo de Monte. "Performance Evaluation of the Electric Machine Cooling System Employing Nanofluid as an Advanced Coolant." ChemEngineering 5, no. 3 (2021): 53. http://dx.doi.org/10.3390/chemengineering5030053.

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In this paper, the overall performance of an electric machine cooling system was examined in terms of heat transfer and fluid flow. The structure of the cooling system was based on the cooling jacket method. The cooling jacket contains spiral channels surrounding the stator and end-windings of the electric machine. Al2O3-water nanofluid is used inside the channels as the cooling fluid. The concentration of nanoparticles and the geometric structure of the cooling system have special effects on both aspects of heat transfer and fluid flow. Therefore, in this paper, the overall performance of the

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10

Deb, Joy Surjy, Md Mahidul Haque Prodhan, Nazmul Hossain, and Golam Sarwar Rakib. "Preliminary CFD investigation for secondary coolant in molten salt reactor with alumina nanofluid considering FLiBe and FLiNaK as base fluid through a double pipe heat exchanger." Journal of Bangladesh Academy of Sciences 46, no. 1 (2022): 45–55. http://dx.doi.org/10.3329/jbas.v46i1.60346.

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This work analyzes a computational fluid dynamics (CFD) methodology based on ANSYS to investigate the 3 % and 4 % volume fraction alumina (Al2O3) nanofluids with base fluids FLiBe (LiF(67)-BeF2(33) (mol%)) and FLiNaK (LiF(46.5)-NaF(11.5)-KF(42) (mol%) through a double pipe heat exchanger. The purpose of the paper is to choose better candidates as secondary coolants in molten salt reactors for better thermodynamics performances and heat transfer characteristics. Six secondary coolants with and without nanofluids and fuel salt as primary coolants are driven through the inner and outer pipe. Late

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11

Lock, Gary D., Michael Wilson, and J. Michael Owen. "Influence of Fluid Dynamics on Heat Transfer in a Preswirl Rotating-Disk System." Journal of Engineering for Gas Turbines and Power 127, no. 4 (2004): 791–97. http://dx.doi.org/10.1115/1.1924721.

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Modern gas turbines are cooled using air diverted from the compressor. In a “direct-transfer” preswirl system, this cooling air flows axially across the wheel space from stationary preswirl nozzles to receiver holes located in the rotating turbine disk. The distribution of the local Nusselt number Nu on the rotating disk is governed by three nondimensional fluid-dynamic parameters: preswirl ratio βp, rotational Reynolds number Reϕ, and turbulent flow parameter λT. This paper describes heat transfer measurements obtained from a scaled model of a gas turbine rotor-stator cavity, where the flow s

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Uddin, Md Mesbah, Raisa Akhtaruzzaman, Tanvir Ahmed Shanto, and Mohammad Nasim Hasan. "Study the Performance of a Dynamic Wall Heat Exchanger Using Computational Fluid Dynamics." European Journal of Engineering and Technology Research 8, no. 3 (2023): 38–42. http://dx.doi.org/10.24018/ejeng.2023.8.3.3043.

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Thermal systems in small devices like cooling electronic chips require efficient technologies with small diameter channels. These systems have laminar flow and disrupted boundary layers, leading to high pressure drop values. To ensure sufficient flow and limit coolant temperature, a possible solution is to dynamically deform one channel wall to mimic pumping and disrupt boundary layers, creating a peristaltic effect, called a dynamic heat exchanger. The aim of the present numerical study is to explore the effects of different operating parameters of the dynamic wall heat exchanger on the heat

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13

Luo, Xuwei, Xiaochun Zeng, Pingping Zou, et al. "A finite element analysis-computational fluid dynamics coupled analysis on thermal-mechanical fatigue of cylinder head of a turbo-charged diesel engine." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 234, no. 6 (2019): 1634–43. http://dx.doi.org/10.1177/0954407019890481.

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A finite element analysis-computational fluid dynamics coupled analysis on the thermo-mechanical fatigue of cylinder head of a turbo-charged diesel engine was performed, and the complete simulation process is illustrated in this paper. In-cylinder combustion analysis and water jacket coolant flow analysis were conducted to provide heat transfer boundary conditions to the temperature field calculation of the cylinder head. Comparing with the conventional finite element analysis of cylinder head by which the heat transfer boundary conditions of the combustion and coolant sides are estimated, the

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14

Dmitriev, S., A. Dobrov, D. Doronkov, et al. "FLUID DYNAMICS IN THE CORE OF A WWER REACTOR WITH TVSA OF VARIOUS DESIGNS." PROBLEMS OF ATOMIC SCIENCE AND TECHNOLOGY. SERIES: NUCLEAR AND REACTOR CONSTANTS 2020, no. 4 (2020): 148–57. http://dx.doi.org/10.55176/2414-1038-2020-4-148-157.

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The results of experimental studies of the interassembly interaction of coolant in VVER reactor core which consists of TVSA-T and upgraded TVSA are presented. The modeling of coolant flow in the fuel assembly (FA) was carried out on an aerodynamic stand. The studies were carried out on a fragment model of VVER reactor core and consisted in measuring the velocity vector modulus in the characteristic zones of both TVSA and interassembly space of VVER reactor core. The measurements were carried out by a five-channel pneumometric probe. An analysis of the spatial distribution of projections of the

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15

Friedrichs, S., H. P. Hodson, and W. N. Dawes. "The Design of an Improved Endwall Film-Cooling Configuration." Journal of Turbomachinery 121, no. 4 (1999): 772–80. http://dx.doi.org/10.1115/1.2836731.

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The endwall film-cooling cooling configuration investigated by Friedrichs et al. (1996, 1997) had in principle sufficient cooling flow for the endwall, but in practice, the redistribution of this coolant by secondary flows left large endwall areas uncooled. This paper describes the attempt to improve upon this datum cooling configuration by redistributing the available coolant to provide a better coolant coverage on the endwall surface, while keeping the associated aerodynamic losses small. The design of the new, improved cooling configuration was based on the understanding of endwall film-coo

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16

Dmitriyev, Sergey M., Anton V. Gerasimov, Aleksander A. Dobrov, et al. "Experimental investigation of the coolant flow in the VVER reactor core with TVSA fuel assemblies." Nuclear Energy and Technology 7, no. (1) (2021): 49–54. https://doi.org/10.3897/nucet.7.65313.

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The paper presents the results of an experimental study to investigate the coolant interaction in adjoining fuel assemblies in the VVER reactor core composed of TVSA-T and upgraded TVSA FAs. The processes of the in-core coolant flow were simulated in a test wind tunnel. The experiments were conducted using models representing different portions of the VVER reactor core fuel bundle and consisted in measuring the radial and axial airflow velocities in representative areas within the FAs and in the interassembly space. The results of the experiments can be translated to the full-scale conditions

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17

Mohamed, W. A. N. W., M. F. Remeli, A. H. A. Hamid, and R. Atan. "Thermal and Coolant Flow Computational Analysis of Cooling Channels for an Air-Cooled PEM Fuel Cell." Applied Mechanics and Materials 110-116 (October 2011): 2746–53. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.2746.

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Polymer Electrolyte Membrane (PEM) fuel cells are clean electrical power generators for applications normally up to 100 kW power requirements. It has the advantage of fast start-up due to its low operating temperatures of 60oC to 100oC. However, the low temperature requirement has to be addressed with an efficient thermal management system. For an air-cooled PEM fuel cell, cooling channels with a straight rectangular configuration are widely applied. This work establishes a computational methodology for the analysis of coolant flow mechanics related to the channel geometry for a specific bipol

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18

Kavinprasad, S., S. Shankar, and M. Karthic. "Experimental and CFD investigations of carbon/SS316 mechanical face seals under different lubricating conditions." Industrial Lubrication and Tribology 67, no. 2 (2015): 124–32. http://dx.doi.org/10.1108/ilt-03-2013-0037.

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Purpose – The purpose of this paper is to test mechanical face seals made of carbon/SS316 with different coolants for evaluating its tribological performance. The reliability of a mechanical seal mainly depends on the seal materials and the type of coolant used for the lubrication. Design/methodology/approach – Compressed air, vacuum and nitrogen are the main coolants utilized for the experimental work, and the obtained results are compared with the dry running case for a specified period. The experimental results are also validated with the computational fluid dynamics (CFD) simulation result

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19

Robinson, K., J. G. Hawley, G. P. Hammond, and N. J. Owen. "Convective coolant heat transfer in internal combustion engines." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 217, no. 2 (2003): 133–46. http://dx.doi.org/10.1177/095440700321700207.

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Simple heat transfer correlations are known to underpredict the single-phase convective heat transfer coefficient when applied to internal combustion (IC) engine cooling passages. The reasons for such underprediction were investigated using a specially designed test rig which was operated under a wide variety of test conditions relevant to IC engine operation. Data from this rig study identified that undeveloped flow (fluid dynamically and thermally), surface roughness and fluid viscosity variation with temperature were the physical reasons responsible for the mismatch. Simple empirical heat t

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20

Burdet, André, and Reza S. Abhari. "Three-Dimensional Flow Prediction and Improvement of Holes Arrangement of a Film-Cooled Turbine Blade Using a Feature-Based Jet Model." Journal of Turbomachinery 129, no. 2 (2006): 258–68. http://dx.doi.org/10.1115/1.2437778.

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A feature-based jet model has been proposed for use in three-dimensional (3D) computational fluid dynamics (CFD) prediction of turbine blade film cooling. The goal of the model is to be able to perform computationally efficient flow prediction and optimization of film-cooled turbine blades. The model reproduces in the near-hole region the macroflow features of a coolant jet within a Reynolds-averaged Navier-Stokes framework. Numerical predictions of the 3D flow through a linear transonic film-cooled turbine cascade are carried out with the model, with a low computational overhead. Different co

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21

Chen, Yifan, and Zhong Hu. "Computational Fluid Dynamic Modeling of Pack-Level Battery Thermal Management Systems in Electric Vehicles." Energies 18, no. 3 (2025): 484. https://doi.org/10.3390/en18030484.

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In electric vehicles (EVs), the batteries are arranged in the battery pack (BP), which has a small layout space and difficulty in dissipating heat. Therefore, in EVs, the battery thermal management systems (BTMSs) are critical to managing heat to ensure safety and performance, particularly under higher operating temperatures and longer discharge conditions. To solve this problem, in this article, the thermal analysis models of a 3-battery-cell BP were created, including scenarios (1) natural air cooling without a BTMS; (2) natural air cooling with water cooling hybrid BTMS; and (3) forced air

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22

Sahoo, Dillip, Sri Ram, and Sriram Prasath. "Numerical investigation on cooling rate in proton exchange membrane fuel cell using propylene glycol fluid." Thermal Science, no. 00 (2023): 40. http://dx.doi.org/10.2298/tsci220429040s.

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In this study, a cooling channel was constructed inside the fuel cell to examine the impact of cooling on proton exchange membrane (PEM) fuel cell performance. The performance of the fuel cell was assessed using four different coolant mixtures: DI100 (100 percent Deionized water), PG10 (90 percent DI water + 10% Propylene Glycol), PG20 (80 percent DI Water + 20% Propylene Glycol), and PG30 (70 percent DI Water + 30% Propylene Glycol). The efficiency of the fuel cell, system temperature, operating parameters, coolant, and cooling channel shape of the fuel cell were tested using a computational

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23

Dmitriyev, Sergey M., Anton V. Gerasimov, Aleksander A. Dobrov, et al. "Experimental investigation of the coolant flow in the VVER reactor core with TVSA fuel assemblies." Nuclear Energy and Technology 7, no. 1 (2021): 59–54. http://dx.doi.org/10.3897/nucet.7.65313.

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The paper presents the results of an experimental study to investigate the coolant interaction in adjoining fuel assemblies in the VVER reactor core composed of TVSA-T and upgraded TVSA FAs. The processes of the in-core coolant flow were simulated in a test wind tunnel. The experiments were conducted using models representing different portions of the VVER reactor core fuel bundle and consisted in measuring the radial and axial airflow velocities in representative areas within the FAs and in the interassembly space. The results of the experiments can be translated to the full-scale conditions

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24

Mouleeswaran, A. S. "Thermal Analysis of Tractor Radiator Using Nanofluid Coolant." International Journal for Research in Applied Science and Engineering Technology 13, no. 3 (2025): 3162–66. https://doi.org/10.22214/ijraset.2025.68028.

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The combustion of fuel-air mixture in tractor engines generates a huge amount of heat, which can quickly lead to overheating and engine failure if not properly cooled. To address this challenge, have designed engine cooling systems that utilize radiators to keep the engine at its optimal operating temperature. This study investigates the thermal performance of a tractor radiator using a nanofluid coolant, comprising antifreeze and nanoparticles. The radiator is designed with a unique tube and fin configuration to enhance heat transfer, and is made up of two tanks, an inlet pipe for heated liqu

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Vieira, Joao Antonio Coelho, John Coull, and Peter Ireland. "Implementation of cooling slots at the pressure side rims of squealer tips." Journal of the Global Power and Propulsion Society 8 (October 31, 2024): 421–35. http://dx.doi.org/10.33737/jgpps/192452.

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The blade tip is a particularly critical component of the high pressure turbine due to the hot overtip leakage gas being responsible for efficiency losses and thermal degradation, often limiting engine life. Squealer tip designs reduce the over-tip leakage mass flow, increasing efficiency, but the thin pressure side rims can be vulnerable to damage because of their large surface area and the difficulties of shielding them from hot overtip leakage flow. This paper considers a new approach to cooling these pressure side rims, by employing an inclined slot inside a recessed step. Compared to conv

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Brenneman, B., and M. K. Au-Yang. "Fluid-Structure Dynamics With a Modal Hybrid Method." Journal of Pressure Vessel Technology 114, no. 2 (1992): 133–38. http://dx.doi.org/10.1115/1.2929020.

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Large structures in nuclear power plants are often separated by very thin fluid-filled cavities. For example, core support structures, thermal shields, and reactor vessels are usually large concentric cylindrical shells with annuli between them as small as 2 percent of the shell diameter. Such thin cavities cause the structures to be very strongly coupled, and such coupling must be accurately modeled to predict the dynamic responses of new designs to turbulence, pump acoustic loading, loss-of-coolant accidents, and seismic events. This paper summarizes a very versatile and efficient method of

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Nagaraj, Meenaskshi Sundaram, Chakaravarthy Ezhilarasan, A. John Presin Kumar, and Rishab Betala. "Analysis of multipoint cutting tool temperature using FEM and CFD." Manufacturing Review 5 (2018): 16. http://dx.doi.org/10.1051/mfreview/2018013.

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Nimonic C-263 is a British nickel–chromium–cobalt–molybdenum alloy specially meant to be used in high-temperature and high-strength applications. Consequently, it produces high thermo-mechanical loads on the machining tool when machined. As a result, excessive heat is generated during dry drilling, between Nimonic C-263 and tungsten carbide tool coated with Alcorna, which in turn reduces the durability of the tool. In order to determine the temperature distribution of the tool, the coupling of finite element machining simulations along with computational fluid dynamics simulations is performed

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Lei, Chun Li, Zhi Yuan Rui, Te Li, and Qin Wu. "Research on the Cooling System of High-Speed Motorized Spindle." Applied Mechanics and Materials 716-717 (December 2014): 1707–10. http://dx.doi.org/10.4028/www.scientific.net/amm.716-717.1707.

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In order to control effectively the temperature of the motorized spindle, based on thermodynamics, heat transfer theory and fluid dynamics control theory, the model of motorized spindle with cooling system is established and simulated. Based on the idea of orthogonal experiment and simulation experiment, the comprehensive tests are built, and the optimum matching relation between the heat flux of motor and the flow velocity of cooling liquid is determined in this article. The results show that the flow velocity of coolant can be adjusted according to the heat flux of motor which can control th

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Thomas, Mitra, and Thomas Povey. "Improving turbine endwall cooling uniformity by controlling near-wall secondary flows." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 231, no. 14 (2016): 2689–705. http://dx.doi.org/10.1177/0954410016673092.

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In this paper, we propose a design philosophy for cooling high-pressure nozzle guide vane endwalls, which exploits the momentum of cooling jets to control vane secondary flows thereby improving endwall cooling uniformity. The impact of coolant-to-mainstream pressure ratio, hole inclination angle, hole diameter, vane potential field, and overall mass flux ratios are considered. Arguments are developed by examining detailed experimental studies conducted in a large-scale low-speed cascade tunnel with engine-realistic combustor geometry and turbulence profiles. Computational fluid dynamics predic

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Soto, Victor, Claudia Ulloa, and Ximena Garcia. "A CFD Design Approach for Industrial Size Tubular Reactors for SNG Production from Biogas (CO2 Methanation)." Energies 14, no. 19 (2021): 6175. http://dx.doi.org/10.3390/en14196175.

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A tubular reactor based on the disk and doughnut concept was designed as an engineering solution for biogas upgrading via CO2 methanation. CFD (Computational Fluid Dynamics) benchmarks agreed well with experimental and empirical (correlation) data, giving a maximum error of 8.5% and 20% for the chemical reaction and heat transfer models, respectively. Likewise, hot spot position was accurately predicted, with a 5% error. The methodology was used to investigate the effect of two commercially available coolants (thermal oil and molten salts) on overall reactor performance through a parametric st

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Jose, J. Prakash Arul, Anurag Shrivastava, Prem Kumar Soni, et al. "An Analysis of the Effects of Nanofluid-Based Serpentine Tube Cooling Enhancement in Solar Photovoltaic Cells for Green Cities." Journal of Nanomaterials 2023 (January 20, 2023): 1–15. http://dx.doi.org/10.1155/2023/3456536.

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In this work, the impact of the serpentine copper tube heat exchanger with nanofluids on 100 W solar photovoltaic thermal collectors (PV/T) was analyzed experimentally and numerically. The cooling fluids assessed in this system were distilled water, Al2O3 0.1%, and Al2O3 0.2% based nanofluids. Tests were accomplished at diverse coolant mass flow rate in India’s summer days of 2018. A computational fluid dynamics (CFD) investigation was carried out to perform a parametric study, identify surface and exit T profiles, and examine the cooling effectiveness. The impact of mass flow rate of nanoflui

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Rezende, Tiari R., Regina F. Vianna, and Samuel Luporini. "Simulation of a Plate Heat Exchanger Operating with Nanofluid Coolant Using CFD." International Journal of Heat and Technology 39, no. 1 (2021): 235–40. http://dx.doi.org/10.18280/ijht.390126.

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The use of nanofluids as coolant fluid in a plate heat exchanger (PHE) was investigated by conducting 3D CFD (Computational Fluid Dynamics) simulations. Al2O3/water nanofluid with volume concentrations of 2%, 3% and 4% was used as coolant fluid and water as hot fluid. In addition, the effects of corrugation angle of the plates were analyzed by varying them between 0° and 60°. Validation was performed by using heat transfer coefficients experimentally obtained in a previous study. Results show that the use of nanofluids in higher concentrations improves the performance of the PHE’s parameters.

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Reddy Kukutla, Pol, and BVSSS Prasad. "Network analysis of a coolant flow performance for the combined impingement and film cooled first-stage of high pressure gas turbine nozzle guide vane." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 233, no. 6 (2018): 1977–89. http://dx.doi.org/10.1177/0954410018767290.

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The present paper describes a system-level thermo-fluid network analysis for the secondary air system analysis of a typically film-cooled nozzle guide vane with multiple actions of jet impingement. The one-dimensional simulation was done with the help of the commercially available Flownex 2015 software. The system-level thermo-fluid network results were validated with both the computational fluid dynamics results and experimentally available literature. The entire nozzle guide vane geometry was first mapped to a thermo-fluid network model and the pressure conditions at different nodes. The dis

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Laveneziana, Lorenzo, Nicola Rosafio, Simone Salvadori, et al. "Conjugate Heat Transfer Analysis of the Aero-Thermal Impact of Different Feeding Geometries for Internal Cooling in Lifetime Extension Processes for Heavy-Duty Gas Turbines." Energies 15, no. 9 (2022): 3022. http://dx.doi.org/10.3390/en15093022.

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Regulations from the European Union move towards a constant reduction of pollutant emissions to match the single-digit goal by 2050. Original equipment manufacturers propose newly designed components for the lifetime extension ofgGas turbines that both reduce emissions and allow for increasing thermodynamic performance by redesigning turbine cooling geometries and optimizing secondary air systems. The optimal design of internal cooling geometries allows for reducing both blade metal temperature and coolant mass-flow rates. In the present study, four different geometries of the region upstream

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Xu, Ziming, Jun Xu, Zhechen Guo, Haitao Wang, Zheng Sun, and Xuesong Mei. "Design and Optimization of a Novel Microchannel Battery Thermal Management System Based on Digital Twin." Energies 15, no. 4 (2022): 1421. http://dx.doi.org/10.3390/en15041421.

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In order to avoid high-temperature and large rate discharge impact on the performance of battery modules, a microchannel liquid cooling battery thermal management system (BTMS) and BTMS virtual model of the microchannel structure based on digital twin (DT) is proposed. On the basis of accurate virtual simulation model, the computational fluid dynamics (CFD) model and the Gaussian process regression algorithm were combined to drive the optimization process in order to improve the cooling capacity of the system. The results show that the microchannel plates can greatly enhance the cooling capaci

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Mohd Rosli, Mohd Afzanizam, Yew Wai Loon, Muhammad Zaid Nawam, et al. "Validation Study of Photovoltaic Thermal Nanofluid Based Coolant Using Computational Fluid Dynamics Approach." CFD Letters 13, no. 3 (2021): 58–71. http://dx.doi.org/10.37934/cfdl.13.3.5871.

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In the study, the photovoltaic thermal system using nanofluid as coolant is validated using numerical approach by comparing the experimental results and simulation results. Due to high cost and difficulty in preparing nanofluid, it is more practical to perform the study using numerical approach which is convenient and saves plenty of time. The photovoltaic thermal system is investigated numerically through Computational Fluid Dynamics Approach using Ansys 19.0 Fluent Software. The numerical study is based on different solar irradiation at different hours. The coolant that is selected in the st

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Akgül, M. Bahattin, and Furkan Sinan Erçel. "Thermal Performance Analysis of a Liquid Cooling Plate for Power Electronics." Celal Bayar Üniversitesi Fen Bilimleri Dergisi 20, no. 4 (2024): 72–81. https://doi.org/10.18466/cbayarfbe.1528939.

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The need for effective cooling methods has become very critical because of the miniaturization and increasing heat flux density in power electronics equipment. The power electronics systems must have good thermal management engineering for efficiency and safe operation. Due to increasing heat loads, liquid cooling options are more preferred than the air cooling solutions. In this study, thermal performance of a liquid cooling plate is investigated by using computational fluid dynamics (CFD) tools. Different flow path configurations are examined for homogeneous and effective cooling of power el

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Kartal, Mehmet Akif, Gürcan Atakök, and Sezgin Ersoy. "Cooling and Multiphase Analysis of Heated Environmentally Friendly R152A (C2H4F2) Fluid Coming from the Production Process According to Nist Indicators." Applied Sciences 14, no. 10 (2024): 4143. http://dx.doi.org/10.3390/app14104143.

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Cooling processes are responsible for a significant portion (20%) of global energy consumption and raise environmental concerns such as ozone depletion, the greenhouse effect, and high energy use. This study investigates the potential of R152a, a refrigerant with low global warming potential (GWP), as a more sustainable alternative. The performance, safety, and operational efficiency of R152a were evaluated under various conditions. Although R152a offers high performance and low GWP, its flammability necessitates caution, especially in certain mixtures. A 12-pass tube-type heat exchanger model

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Chen, Yujie, Lihua Cai, Dianxu Ruan, Haifeng Fang, and Ziwei Zhanga. "Thermal performance optimization study of two types of side cooling plates for 280Ah battery modules." Thermal Science, no. 00 (2025): 86. https://doi.org/10.2298/tsci241229086c.

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Energy storage battery packs generate a significant amount of heat during operation, affecting battery performance and lifespan, and potentially leading to safety risks. Consequently, the design of efficient battery cooling plates is essential for maintaining the performance of energy-storage battery packs. This study performs a comparative investigation of the cooling efficacy of ECP versus MCP. We created and enhanced three model sets for the two types of cooling plates. The findings indicate that lowering the coolant inlet temperature reduces the peak temperature of the batteries in both co

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Seo, Ye-Bon, SalaiSargunan S. Paramanantham, Jin-Yeong Bak, Byongjo Yun, and Warn-Gyu Park. "CFD Analysis of Subcooled Flow Boiling in 4 × 4 Rod Bundle." Applied Sciences 10, no. 13 (2020): 4559. http://dx.doi.org/10.3390/app10134559.

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Rod bundle flow is an important research field related to reactor cooling in nuclear power plants. Owing to the rapid development of computerized performance assessments, interest in coolant flow analysis using computational fluid dynamics has garnered research interest. Rod bundle flow research data compared with experimental results under various conditions are thus needed. To address this, a boiling model verification study was conducted with reference to experiments. This study adopts the Reynolds-averaged Navier–Stokes equation, a practical analysis method compared to direct numerical sim

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Elhomdy, Esmail, Zheng Liu, and Guofeng Li. "Thermal and Mechanical Analysis of a 72/48 Switched Reluctance Motor for Low-Speed Direct-Drive Mining Applications." Applied Sciences 9, no. 13 (2019): 2722. http://dx.doi.org/10.3390/app9132722.

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In the process of electric motor design, it is essential to predict and provide an accurate thermal and mechanical model. The aim of this research is to improve the thermal and mechanical performance—which is implemented into a 72/48 switched reluctance motor (SRM) with 75 kW—of a low-speed direct-drive mining system (pulverizer). Thermal analysis of the SRM requires a deep understanding of the coolant behavior and the thermal mechanism in the motor. Computational fluid dynamics (CFD) based finite element analysis (FEA) was carried out in order to precisely visualize and estimate fluid state a

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Costa, Ilídio Brito, Bruno Rafael Cunha, João Marouvo, et al. "Topology Optimization of a Milling Cutter Head for Additive Manufacturing." Metals 15, no. 7 (2025): 729. https://doi.org/10.3390/met15070729.

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The rapid growth of the machining market and advancements in additive manufacturing (AM) present new opportunities for innovative tool designs. This preliminary study proposes a design for additive manufacturing (DfAM) approach to redesign a milling cutter head in 17-4 PH stainless steel by integrating topology optimization (TO) and internal coolant channel optimization, enabled by laser powder bed fusion (LPBF). An industrial eight-insert milling cutting tool was reimagined with conformal cooling channels and a lightweight topology-optimized structure. The design process considered LPBF const

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Bi, Haojie, Hongying Yuan, Zhiyuan Xu, Zhuobin Liang, and Yongliang Du. "Research on the Performance and Computational Fluid Dynamics Numerical Simulation of Plate Air Gap Membrane Distillation Module." Membranes 14, no. 8 (2024): 162. http://dx.doi.org/10.3390/membranes14080162.

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Membrane distillation (MD) is widely used in the field of seawater desalination. Among its various sub-categories, air gap membrane distillation (AGMD) stands out due to its high thermal efficiency and compatibility with low-grade heat sources. This study delves into the impact of varying operating conditions on AGMD performance, employing numerical simulations which are grounded in experimental validation. The objective was to enhance the performance of AGMD, mitigate polarization phenomena, and provide a reference for optimizing membrane component design. The results show that the agreements

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Komeili Birjandi, Amir, Mohammad Eftekhari Yazdi, Saeed Dinarvand, Gholam Reza Salehi, and Pedram Tehrani. "Effect of Using Hybrid Nanofluid in Thermal Management of Photovoltaic Panel in Hot Climates." International Journal of Photoenergy 2021 (September 18, 2021): 1–8. http://dx.doi.org/10.1155/2021/3167856.

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Photovoltaic (PV) cells have been applied for direct conversion of solar radiation into electricity. Their performance is significantly affected by the working temperature. Due to the higher efficiency of the cells in lower temperatures, several thermal management approaches have been applied in recent years. Employing liquids as coolant is one of the efficient approaches in cooling down the PV cells. Using fluids with enhanced heat transfer properties would lead to further improvement in the output of the cells. In this paper, utilization of a hybrid nanofluid, with improved thermophysical ch

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Mazzei, Lorenzo, Antonio Andreini, and Bruno Facchini. "Assessment of modelling strategies for film cooling." International Journal of Numerical Methods for Heat & Fluid Flow 27, no. 5 (2017): 1118–27. http://dx.doi.org/10.1108/hff-03-2016-0086.

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Purpose Effusion cooling represents one the most innovative techniques for the thermal management of aero-engine combustors liners. The huge amount of micro-perforations implies a significant computational cost if cooling holes are included in computational fluid dynamics (CFD) simulations; therefore, many efforts are reported in literature to develop lower-order approaches aiming at limiting the number of mesh elements. This paper aims to report a numerical investigation for validating two approaches for modelling film cooling, distinguished according to the way coolant is injected (i.e. thro

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van de Noort, Michael, and Peter T. Ireland. "Genetic Algorithm-Based Optimisation of a Double-Wall Effusion Cooling System for a High-Pressure Turbine Nozzle Guide Vane." International Journal of Turbomachinery, Propulsion and Power 9, no. 1 (2024): 6. http://dx.doi.org/10.3390/ijtpp9010006.

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Double-Wall Effusion Cooling schemes present an opportunity for aeroengine designers to achieve high overall cooling effectiveness and convective cooling efficiency in High-Pressure Turbine blades with reduced coolant usage compared to conventional cooling technologies. This is accomplished by combining impingement, pin-fin and effusion cooling. Optimising these cooling schemes is crucial to ensuring that cooling is achieved sufficiently at high-heat-flux regions and not overused at low-heat-flux ones. Due to the high number of design variables employed in these systems, optimisation through t

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Oezkaya, Ekrem, Moritz Fuss, Maximilian Metzger, and Dirk Biermann. "Investigation of coolant distribution of bottle boring systems with computational fluid dynamics simulation." CIRP Journal of Manufacturing Science and Technology 35 (November 2021): 259–67. http://dx.doi.org/10.1016/j.cirpj.2021.05.012.

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Ravikumar, K. V., R. M. Carandang, and T. H. K. Frederking. "Magnet safety and stability related coolant states: critical fluid dynamics at peak flux." Cryogenics 33, no. 8 (1993): 801–8. http://dx.doi.org/10.1016/0011-2275(93)90191-p.

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Elsinger, Georg, Herman Oprins, Vladimir Cherman, Geert Van der Plas, Eric Beyne, and Ingrid De Wolf. "Effects of Nozzle Pitch Adaptation in Micro-Scale Liquid Jet Impingement." Fluids 9, no. 3 (2024): 69. http://dx.doi.org/10.3390/fluids9030069.

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With ever increasing integration density of electronic components, the demand for cooling solutions capable of removing the heat generated by such systems grows along with it. It has been shown that a viable answer to this demand is the use of direct liquid jet impingement. While this method can generally be scaled to the cooling of large areas, this is restricted by the necessity of coolant flow rate scaling. In this study, the benefits and restrictions of using increased nozzle pitch to remedy the increasing demand for overall flow rate are investigated. To this end, a model is validated aga

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Northall, John D. "The Influence of Variable Gas Properties on Turbomachinery Computational Fluid Dynamics." Journal of Turbomachinery 128, no. 4 (2005): 632–38. http://dx.doi.org/10.1115/1.2221324.

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This paper describes the inclusion of variable gas properties within a Reynolds average Navier-Stokes solver for turbomachinery and its application to multistage turbines. Most current turbomachinery computational fluid dynamics (CFD) models the gas as perfect with constant specific heats. However, the specific heat at constant pressure CP can vary significantly. This is most marked in the turbine where large variations of temperature are combined with variations in the fuel air ratio. In the current model CP is computed as a function of the local temperature and fuel air ratio using polynomia

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