Optimal Design of Thermal Radiative Heating of Horizontal Thin Plates Using the Entropy Generation Minimization Method

Abstract

Thermal radiant heating through distinct heat sources is of interest for the thermal loading of thin objects as it is used in residential applications, furnaces, and insulator designs. In this paper, an optimal design for a thermal radiant system by discrete suspended heat sources is analyzed in a side open cavity used for heating the top plate, while the bottom plate is kept at a constant temperature, using the entropy generation minimization method. To avoid pressure fluctuations, the semi-implicit method for pressure linked equations method is used, which solves the continuity, Navier-Stokes, fluid energy, and surface energy equations simultaneously. The system is optimized based on the characteristic length of discrete heat sources, height of discrete heat sources from the bottom plate, the distance between discrete heat sources, the number of discrete heat sources, and the aspect ratio of the cavity that finds the optimal location of heating elements. In addition to the geometrical parameters, the effects of the thermal loading parameters on the optimal position are investigated.

Optimal Design of Isothermal Sloshing Vessels by Entropy Generation Minimization Method

“…The ship maneuver-induced motion in the partially-filled tanks by liquid, sloshing poses a thoughtful danger to the controllability and stability of this phenomenon. The entropy generation minimization method is used for the design of fluid flow motion system [1] as well as thermal systems [2][3][4] in recent years. Although the method is applied to the thermodynamic optimization of many finite-size systems and finite-time processes [5], the application in isothermal fluid flow is rare [6].…”

LBM simulation of piezo fan in square enclosure

“…Heat removal in an enclosure is interested field of study in many engineering and industrial uses, such as heat pipes (Singh et al , 2013), headlamp for automotive (Remsburg, 1998; Singh et al , 2014; Jamalabadi et al , 2012; Abdollahzadeh Jamalabadi et al , 2013; Abdollahzadeh Jamalabadi, 2014a; Abdollahzadeh Jamalabadi, 2014b; Jamalabadi, 2015; Abdollahzadeh Jamalabadi and Dousti, 2016; Gholamalizadeh et al , 2017; Abdollahzadeh Jamalabadi et al , 2017; Jamalabadi, 2017), radiative furnaces (Jamalabadi et al , 2012; Abdollahzadeh Jamalabadi et al , 2013; Abdollahzadeh Jamalabadi, 2014a), lubrication technologies (Jamalabadi, 2015; Jamalabadi, 2017), thermal storage systems (Abdollahzadeh Jamalabadi and Dousti, 2016; Gholamalizadeh et al , 2017; Abdollahzadeh Jamalabadi et al , 2017; Jamalabadi, 2017; Yorinaga et al , 1985; Acikalin et al , 2004a; Acikalin et al , 2004b), solar collectors (Bejan, 1984) and thermal management of aviation in high speed aircrafts (Chapra and Canale, 1988), thermal design of building (Shadloo, 2019; Sadeghi et al , 2018; Sadeghi and Shadloo, 2017; Sadeghi et al , 2016; Hopp-Hirschler et al , 2019), polymer process (Hopp-Hirschler et al , 2018; Nasiri et al , 2018; Shadloo et al , 2016), air conditioning (Rahmat et al , 2014; Fatehi et al , 2014; Shadloo et al , 2013), drying technologies equipment (Karlin et al , 1998; Ghia et al , 1982; Toda, 1979; Sheu et al , 2008) and heat removal from electronic devices (Yoo et al , 2000; Liu et al , 2009, 2013; Kimber and Garimella, 2009; Kimber et al , 2009; Ma et al , 2012; Yao and Uchino., 2001; Sufian et al , 2013; Wu and Ro., 2005; Dey and Chakrborty., 2009; Maaspuro, 2016; Li et al , 2013; Li and Wu., 2016; Wait et al , 2007; Chang et al , 2015; Kota and Mukherjee, 2018), chemical processing (…”

“…As well piezoelectric fans can work in risky circumstances where bearing used fan would be unsuccessful or where audible noise requests to be retained to a minimum. Between the various methods of thermal management in confined systems (Jamalabadi, 2015; Abdollahzadeh Jamalabadi and Dousti, 2016; Gholamalizadeh et al , 2017; Abdollahzadeh Jamalabadi et al , 2017; Jamalabadi, 2017; Yorinaga et al , 1985) that method by using piezoelectric materials properties of PZT ceramics leads to efficient cooling with robust and reliable cooling technology (Acikalin et al , 2004a). Many military systems work between −55°C and 125°C, whereas the common fan will operate between −20°C and 85°C (Abdollahzadeh Jamalabadi and Dousti, 2016).…”