Purpose

This study aims to employ a modern numerical approach for conducting the simulations, which uses the smoothed-profile lattice Boltzmann method. Two separate distribution functions for flow and temperature fields are used to solve the Navier–Stokes equations in the most efficient manner. In addition, the Koo–Kleinstreuer–Li model is used to calculate the dynamic viscosity and thermal conductivity in the desired volume fractions, and the effect of Brownian motion is taken into consideration.

Design/methodology/approach

Nowadays, because of enhanced global price of oil and critical issue of global warming, a significant demand for using renewable energy exists. The solar energy is one of the most popular forms of renewable energy. The solar collector can be used to collect and trap the energy received from the sun. The present work focuses on introducing and investigating a parabolic-trough solar collector.

Findings

To analyze all hydrodynamic and thermal views of the solar collector, the structure of nanofluid stream, distribution of temperature, local dissipations because of flow and heat transfer, volumetric entropy production, Bejan number vs Rayleigh number and volume fraction are presented. Also, three different configurations for profile of solar receiver are designed and studied.

Originality/value

The originality of the present work is in using a modern numerical approach for a well-known application. Also, the effect of Brownian motion is taken into account which significantly enhances the accuracy.

中文翻译：

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Koo-Kleinstreuer-Li 模型预测的填充有纳米流体的波纹抛物槽太阳能集热器的水热分析的平滑/轮廓格子 Boltzmann 方法

目的

本研究旨在采用现代数值方法进行模拟，该方法使用平滑轮廓格子玻尔兹曼方法。流量和温度场的两个独立分布函数用于以最有效的方式求解 Navier-Stokes 方程。此外，Koo-Kleinstreuer-Li 模型用于计算所需体积分数的动态粘度和热导率，并考虑了布朗运动的影响。

设计/方法/方法

如今，由于全球石油价格上涨和全球变暖的严重问题，对使用可再生能源的需求很大。太阳能是最流行的可再生能源形式之一。太阳能收集器可用于收集和捕获从太阳接收到的能量。目前的工作重点是介绍和研究抛物槽太阳能集热器。

发现

为了分析太阳能集热器的所有流体动力学和热学视图，介绍了纳米流体流的结构、温度分布、流动和传热引起的局部耗散、体积熵产生、Bejan 数与 Rayleigh 数和体积分数。此外，还设计和研究了三种不同的太阳能接收器轮廓配置。

原创性/价值

本工作的独创性在于将现代数值方法用于众所周知的应用程序。此外，还考虑了布朗运动的影响，从而显着提高了准确性。