Thermal analysis of a fully wet porous radial fin with natural convection and radiation using the spectral collocation method

Purpose This paper aims to study the temperature performance with natural convection and radiation effect on a porous fin in fully wet condition. Design/methodology/approach The finite element method (FEM) is applied to generate numerical solution of the obtained non-dimensional ordinary differential equation containing highly nonlinear terms. The parameters which impact on the heat transfer of fin have been scrutinized by means of plotted graphs. Findings The porous fin is taken for the analysis in radial profile moving with constant velocity. Here, the thermal conductivity is considered to be temperature dependent. The Darcy’s model has been implemented to study the heat transfer analysis. Originality/value The paper is genuine in its type, and there are hardly any works on fins as per the authors’ knowledge.

show abstract

“…It is assumed that the heat transfer coefficient by convection his a function of temperature (Khani et al, 2016; and is as given below:…”

Section: Mathematical Formulationmentioning

confidence: 99%

“…Darvishi et al (2016a) analyzed the temperature due to natural radiation and convection in a totally wet conditioned porous fin. Khani et al (2016) used the spectral collocation method and investigated the temperature performance of a totally wet permeable radial fin with natural radiation and convection.…”

Section: Introductionmentioning

confidence: 99%

Temperature distribution analysis in a fully wet moving radial porous fin by finite element method

Gireesha¹,

Sowmya

Madhu

2019

HFF

Self Cite

View full text Add to dashboard Cite

show abstract

“…Darvishi, Gorla, Khani and Gireesha (2016) conducted temperature analysis of totally wetted porous fin due to radiative and natural conductive heat transfer. Khani et al (2016) using the spectral collocation method improved the totally wetted radial porous fin with radiation and natural convection. The finite element method have been utilised by Gireesha et al (2019) to Thermal performance of fully wet porous fin study the moving fin of radial profile under the totally wet condition.…”

Section: 4mentioning

confidence: 99%

Thermal performance of fully wet longitudinal porous fin with temperature-dependent thermal conductivity, surface emissivity and heat transfer coefficient

Sowmya

Gireesha

Makinde

2019

MMMS

Self Cite

View full text Add to dashboard Cite

Purpose The purpose of this paper is to study the thermal behaviour of a fully wet porous fin of longitudinal profile. The significance of radiative and convective heat transfer has been scrutinised along with the simultaneous variation of surface emissivity, heat transfer coefficient and thermal conductivity with temperature. The emissivity of the surface and the thermal conductivity are considered as linear functions of the local temperature between fin and the ambient. Darcy’s model was considered to formulate the heat transfer equation. According to this, the porous fin permits the flow to penetrate through it and solid–fluid interaction occurs. Design/methodology/approach Runge–Kutta–Fehlberg fourth–fifth-order method has been used to solve the reduced non-dimensionalized ordinary differential equation involving highly nonlinear terms. Findings The impact of pertinent parameters, such as convective parameter, radiative parameter, conductivity parameter, emissivity parameter, wet porous parameter, etc., on the temperature profiles were elaborated mathematically with the plotted graphs. The heat transfer from the fin enhances with the rise in convective parameter. Originality/value The wet nature of the fin enhances heat transfer and in many practical applications the parameters, such as thermal conductivity, heat transfer coefficient as well as surface emissivity, vary with temperature. Hence, the main objective of the current study is to depict the significance of simultaneous variation in surface emissivity, heat transfer coefficient and thermal conductivity with respect to temperature under natural convection and radiation condition in a totally wetted longitudinal porous fin.

show abstract

“…In the fully wetted porous pin fin, the optimization, the rate of heat transfer, efficient and thermal performance have been studied by Vahabzadeh et al 15 Darvishi et al 16 investigated heat transfer in the longitudinal fin with totally wet conditions under natural radiation and convection. Khani et al 17 through the spectral collocation method studied the simultaneous variation of convection and radiation in a radial fin in completely wet condition. Gireesha et al 18 have carried out a study on a radial profiled moving porous fin under totally wet conditions.…”

Section: Introductionmentioning

confidence: 99%

Analysis of a fully wetted moving fin with temperature‐dependent internal heat generation using the finite element method

2020

View full text Add to dashboard Cite

The temperature field of a moving longitudinal porous fin with varying internal heat generation with respect to temperature has been studied under natural radiation and convection effects. The Darcy model was implemented for the analysis and the parameters, whose effect on the thermal process were grouped and nondimensionalized. By using the finite element method, the obtained highly nonlinear second order ordinary differential equations were numerically solved. The relevant parameters were studied by means of graphs and subsequently their importance in the rate of heat transfer was interpreted. K E Y W O R D Sinternal heat generation, longitudinal porous fin, moving fin, natural convection, radiation, thermal analysis

show abstract

Thermal analysis of a fully wet porous radial fin with natural convection and radiation using the spectral collocation method

Cited by 11 publications

References 21 publications

Temperature distribution analysis in a fully wet moving radial porous fin by finite element method

Temperature distribution analysis in a fully wet moving radial porous fin by finite element method

Thermal performance of fully wet longitudinal porous fin with temperature-dependent thermal conductivity, surface emissivity and heat transfer coefficient

Analysis of a fully wetted moving fin with temperature‐dependent internal heat generation using the finite element method

Contact Info

Product

Resources

About