If record media and the surface portable calculation device null two-dimensional space which record the surface movement calculation program with two-dimensional fusion

摘要

PROBLEM TO BE SOLVED: To obtain boundary surface movement in two-dimensional fusion and the boundary surface movement in two-dimensional coagulation by a computer in a short time. ;SOLUTION: A triangle is formed on the boundary surface at a time (t) with two apexes (X1, Y1) and (X2, Y2) and further with an apex (X3, Y3) and, when the temp. at the time (t) at each apex is a1 (t), outward directional unit normal line vectors to the boundary surface are (n1, n2), the surface area of the triangle is SG, the heat conductivity or the dimensionless number of liquid in the two-dimensional fusion and of solid in the two-dimensional coagulation is (k), and (Σ) is the sum of 3 groups of (1, 2, 3), (2, 3, 1) and (3, 1, 2) when the group of (i), (j) and (k) is expressed by (i, j, k), the distance D through which the boundary surface is moved during the time Δt in the X direction is calculated by D=-kΔt/2n1SGΣ((Yj-Yk)n1+(Xk-Xj)n2)a1(t).;COPYRIGHT: (C)2000,JPO