Kananipour Mahtiam, Mohseni Mehdi Moayed, Jahanmardi Reza, Khonakdar Hossein Ali
Department of Chemical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Department of Polymer Processing, Iran Polymer and Petrochemical Institute, Tehran, Iran.
Heliyon. 2024 Oct 20;10(21):e39526. doi: 10.1016/j.heliyon.2024.e39526. eCollection 2024 Nov 15.
The heat and mass transfer of the electroosmotic flow in microchannel transporting viscoelastic nanofluid is investigated considering Brownian motion of nanoparticles and slip boundary conditions. The simplified Phan-Thien-Tanner model is employed to describe the rheological behavior of fluid and the nonlinear Navier model with non-zero slip critical shear stress is considered at walls. The governing nonlinear momentum, mass, and heat transfer equations are solved using the Homotopy Perturbation Method. The study reveals that increasing the fluid elasticity, nanoparticle concentration, and size significantly enhances the flow rate, heat and mass transfer. Additionally, elasticity and Reynolds number decrease the friction factor. Reducing the double-layer thickness and increasing the Reynolds number lead to higher flow rates and fluid velocities. Notably, the findings emphasize the critical role of the slip conditions on the Sherwood and Nusselt numbers.
考虑纳米颗粒的布朗运动和滑移边界条件，研究了微通道中输送粘弹性纳米流体的电渗流的传热传质。采用简化的Phan-Thien-Tanner模型描述流体的流变行为，并在壁面处考虑具有非零滑移临界剪切应力的非线性Navier模型。使用同伦摄动法求解控制非线性动量、质量和传热方程。研究表明，增加流体弹性、纳米颗粒浓度和尺寸会显著提高流速、传热和传质。此外，弹性和雷诺数会降低摩擦系数。减小双层厚度和增加雷诺数会导致更高的流速和流体速度。值得注意的是，研究结果强调了滑移条件对舍伍德数和努塞尔数的关键作用。
