dc.contributor.author | Li, Zheng | eng |
dc.contributor.author | Yang, Mo | eng |
dc.contributor.author | Zhang, Yuwen | eng |
dc.contributor.other | University of Missouri-Columbia. College of Engineering. Department of Mechanical and Aerospace Engineering. | eng |
dc.date.issued | 2015 | eng |
dc.description.abstract | Purpose: The purposes of this paper are testing an efficiency algorithm based on LBM and using it to analyze two-dimensional natural convection with low Prandtl number.
Design/methodology/approach: Steady state or oscillatory results are obtained using double multiple-relaxation-time thermal lattice Boltzmann method. The velocity and temperature fields are solved using D2Q9 and D2Q5 models, respectively.
Findings: With different Rayleigh number, the tested natural convection can either achieve to steady state or oscillatory. With fixed Rayleigh number, lower Prandtl number leads to a weaker convection effect, longer oscillation period and higher oscillation amplitude for the cases reaching oscillatory solutions. At fixed Prandtl number, higher Rayleigh number leads to a more notable convection effect and longer oscillation period.
Originality/value: Double multiple-relaxation-time thermal lattice Boltzmann method is applied to simulate the low Prandtl number (0.001 – 0.01) fluid natural convection. Rayleigh number and Prandtl number effects are also investigated when the natural
convection results oscillate. | eng |
dc.identifier.uri | https://hdl.handle.net/10355/48273 | eng |
dc.language | English | eng |
dc.relation.ispartof | Mechanical and Aerospace Engineering presentations | eng |
dc.rights | OpenAccess. | eng |
dc.rights.license | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License. | eng |
dc.subject | lattice Boltzmann method, multiple-relaxation-time model, natural convection, low Prandtl number | eng |
dc.title | Double MRT thermal lattice Boltzmann method for simulating natural convection of low Prandtl number fluids | eng |
dc.type | Article | eng |