A thermal immersed boundary–lattice Boltzmann method for moving-boundary flows with Dirichlet and Neumann conditions. (June 2018)

• Record Type: Journal Article
• Authors: Suzuki, Kosuke; Kawasaki, Tsuyoshi; Furumachi, Naoki; Tai, Youming; Yoshino, Masato
• Is Part Of: International journal of heat and mass transfer. Volume 121(2018)
• Page Start: 1099
• Page End: 1117
• Publication Date: 2018-06
• Subjects: Immersed boundary method -- Lattice Boltzmann method -- Moving-boundary flow -- Heat transfer -- Dirichlet condition -- Neumann condition; Heat -- Transmission -- Periodicals; Mass transfer -- Periodicals; Chaleur -- Transmission -- Périodiques; Transfert de masse -- Périodiques; Electronic journals; 621.4022
• DOI: 10.1016/j.ijheatmasstransfer.2018.01.033
• Languages: English
• ISSNs: 0017-9310

Abstract

Highlights: A thermal immersed boundary-lattice Boltzmann method is proposed. The proposed method is for moving-boundaries with Dirichlet and Neumann conditions The proposed method is validated extensively through many benchmark problems. The internal heat effect is investigated by using the proposed method. The proposed method is applied to simulations of a simplified model of ice slurry flow. Abstract: We construct a simple immersed boundary–lattice Boltzmann method for moving-boundary flows with heat transfer. On the basis of the immersed boundary–lattice Boltzmann method for calculating the fluid velocity and the pressure fields presented in the previous work by Suzuki and Inamuro (2011), the present method incorporates a lattice Boltzmann method for the temperature field combined with immersed boundary methods for satisfying thermal boundary conditions, i.e., the Dirichlet (iso-thermal) and Neumann (iso-heat-flux) conditions. We validate the present method through many benchmark problems including stationary and moving boundaries with iso-thermal and iso-heat-flux conditions, and we find that the present results have good agreement with other numerical results. Also, we investigate the internal heat effect through simulations of moving-boundary flows with heat transfer by using the present method. In addition, we apply the method to an interesting example of a moving-boundary flow with heat transfer, i.e., a two-dimensional thermal flow in a heated channel with moving cold particles, which is a simplified model of ice slurry flow.