Effect of Prandtl number on the average exit temperature of coolant in a heat‐generating vertical parallel plate channel: A conjugate analysis

Ad, Mohammad Samee; Afzal, Asif; Kaladgi, Abdul Razak; Mk, Ramis

doi:10.1002/htj.21330

Cited by 15 publications

(6 citation statements)

References 37 publications

(46 reference statements)

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“…The above non-dimensionalized parameters are selected based on previous research work that are close to conjugate study of parallel plate channel (Kaladgi et al 2019;Abdul Razak et al 2019;Mohamme Samee et al 2019;Samee et al 2018).…”

Section: Numerical Methodologymentioning

confidence: 99%

Parallel performance analysis of coupled heat and fluid flow in parallel plate channel using CUDA

2020

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The heat transfer analysis coupled with fluid flow is important in many real-world application areas varying from micro-channels to spacecraft's. Numerical prediction of thermal and fluid flow situation has become very common method using any computational fluid dynamics software or by developing in-house codes. One of the major issues pertinent to numerical analysis lies with immense computational time required for repeated analysis. In this article, technique applied for parallelization of in-house developed generic code using CUDA and OpenMP paradigm is discussed. The parallelized finite-volume method (FVM)-based code for analysis of various problems is analyzed for different boundary conditions. Two GPUs (graphical processing units) are used for parallel execution. Out of four functions in the code (U, V , P, and T), only P function is parallelized using CUDA as it consumes 91% of computational time and the rest functions are parallelized using OpenMP. Parallel performance analysis is carried out for 400, 625, and 900 threads launched from host for parallel execution. Improvement in speedup using CUDA compared with speedup using complete OpenMP parallelization on different computing machines is also provided. Parallel efficiency of the FVM code for different grid size, Reynolds number, internal flow, and external flow is also carried out. It is found that the GPU provides immense speedup and outperforms OpenMP largely. Parallel execution on GPU gives results in a quite acceptable amount of time. The parallel efficiency is found to be close to 90% in internal flow and 10% for external flow.

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Section: Numerical Methodologymentioning

confidence: 99%

Parallel performance analysis of coupled heat and fluid flow in parallel plate channel using CUDA

2020

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“…Apart from this there are many studies available which speaks about the behavior of vertical parallel plates subjected to flow of fluid under forced and mixed convection flow regime [19][20][21][22][23]. Recently Samee et al have investigated numerically about effect of Prandtl number on coolant exit temperature flowing through the heat generating parallel plate channel and Li-ion battery cells [24,25].…”

Section: Introductionmentioning

confidence: 99%

“…Numerical studies reported by the Ramis et al were associated with single heat generating plate subjected to forced convection flow of coolant under conjugate, laminar, incompressible flow condition [3,4]. Whereas the study reported by Samee et al is pertinent to heat generating parallel plates but considered only the effect of Prandtl number on exit temperature of coolants [24].…”

Section: Introductionmentioning

confidence: 99%

Temperature and Location of Hot Spots Variation with Spacing in a Vertical Parallel Plate Channel: Conjugate View

Mohammad¹,

Afzal²,

Razak³

et al. 2019

IJHT

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The objective of present investigation is twofold, one to determine the effect of operational parameter on maximum temperature (Hot spots temperature) in heat generating (uniform and non-uniform) vertical parallel plates and two is to find out the position of maximum temperature (hot spots location) when plates are placed apart at optimum spacing (Bopt). A conjugate two dimensional laminar forced convection analysis is carried out in which the equations regulating the heat and fluid flow are solved by using finite difference numerical technique and the obtained algebraic equations are solved by using Thomas algorithm. The parameters viz Reynolds Number (ReH), Conduction-Convection parameter (Ncc), Heat generation parameter (Qt), and Prandtl Number (Pr), Spacing between the plates (B) were considered for present study, while the aspect ratio (Ar) of the plate is kept constant. The major outcome of present study says that the location of hot spot is mainly affected by ReH and mode of heat generation (uniform and non-uniform). It is also found that the spacing between the plates (B), ReH, Pr and Ncc play a major role in reducing the hotspots temperature.

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“…The effect of heat‐transfer coefficient between coolant and fuel rod on the temperature histories of the fuel pellet and the cladding was also inspected. Similarly, a number of studies are available in the literature that has considered the analysis of 2D plates/fins/fuel elements with or without uniform heat generation along with steady or transient heat‐transfer criteria …”

Section: Introductionmentioning

confidence: 99%

“…Similarly, a number of studies are available in the literature that has considered the analysis of 2D plates/fins/fuel elements with or without uniform heat generation along with steady or transient heat-transfer criteria. [20][21][22][23][24][25][26][27][28][29][30] With the exception of Ramis et al, [6][7][8]16 most of the researchers have solved the 1D heat conduction equation to find the temperature distribution in the nuclear fuel element. In most of the studies, the conjugate effect of heat transfer and realistic nonuniform heat generation was not considered.…”

mentioning

confidence: 99%

Investigation of dimensionless parameters and geometry effects on heat‐transfer characteristics of liquid sodium flowing over a flat plate

Kaladgi¹,

Afzal²,

Ad³

et al. 2018

Heat Trans. Asian Res.

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To improve the cooling performance of a nuclear fuel element, it is important to appraise the effect of dimensionless parameters and the geometry on heat‐transfer characteristic of sodium flowing over a nuclear fuel element. To fulfill this objective, the effects of geometry, Reynolds number (ReH), conductivity ratio ( N cc ), and dimensionless total heat generation parameter ( Qt) on a two‐dimensional steady flow of liquid coolant flowing over a nuclear fuel element are studied. For this purpose, the stream function‐vorticity formulation method is applied. Full Navier Stokes equations and energy equation for the fluid domain are solved concurrently with conduction equation of fuel element applying finite difference scheme. The pseudotransient form of the vorticity transport and energy equations is solved using the alternating direction implicit method. A line‐by‐line technique is used for other discretized equations. Isotherms are also plotted and studied in detail. From the obtained results it can be concluded that for fixed values of aspect ratio and Re H there exists a critical value of Qt and N cc beyond and below which peak temperature in the fuel element surpasses its tolerable limit. The results can also be applied to minimize the peak temperature in the nuclear fuel element (hot spots).

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Effect of Prandtl number on the average exit temperature of coolant in a heat‐generating vertical parallel plate channel: A conjugate analysis

Cited by 15 publications

References 37 publications

Parallel performance analysis of coupled heat and fluid flow in parallel plate channel using CUDA

Parallel performance analysis of coupled heat and fluid flow in parallel plate channel using CUDA

Temperature and Location of Hot Spots Variation with Spacing in a Vertical Parallel Plate Channel: Conjugate View

Investigation of dimensionless parameters and geometry effects on heat‐transfer characteristics of liquid sodium flowing over a flat plate

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