<報文>座標変換法による汚泥溶融炉内ガス流れの計算機シミュレーション

概要

論文の詳細を見る
A mathematical formulation was proposed for the simulation of gas flow in the sludge furnace which was made of packed bed and free board. As for the equation of motion for the gas, Ergun's equation with the inertial term was used for the packed bed, while the k-ε turbulence model was used for the free board, The applied solution algorithm was an extension of the SIMPLE algorithm to make a general curvilinear coordinate formulation of the governing equations. For this purpose, a body fitted coordinate system was applied to the gas flow analysis. The system is a curvilinear coordinate system that generates the grid by solving a system of elliptic equations. The generated grid is coincident with each segment of the boundary of a region. By transforming the fundamental equations described in the form of partial differential equations into such a coordinate system, a finite-difference method was able to be applied for obtaining the three-dimensional numerical solution on gas flow. A staggered grid system was adopted for the scalar variables and velocity written in the general curvilinear coordinates. The convection terms in the governing equations was approximated by the hybrid scheme. The flow characteristics were obtained for the packed beds which had irregular shapes and for the sludge furnace consisted of complicated shapes of packed bed and free board. This procedure has many practical engineering applications.Gas FlowPacked BedFree-boardErgun's Equationk-εModelFinite Difference MethodBody Fitted Coordinate SystemHybrid SchemeMetric DerivativeStaggered GridSludge Furnace
東北大学の論文
1990-03-30

<報文>座標変換法による汚泥溶融炉内ガス流れの計算機シミュレーション

スポンサーリンク

概要

著者

関連論文

スポンサーリンク