Simulation Apparatus, Simulation Method, and Simulation Program

摘要

A simulation apparatus for calculating unsteady spatial distributions of wind speed, temperature, etc. in a simulation target space where buildings and trees exist. The simulation apparatus calculates unsteady spatial distributions of wind speed, temperature, etc. in the simulation target space, taking into consideration the effect of the radiation heat absorbed each element and the effect of exchange of heat and water vapor between the trees and the atmosphere.

主权项

1. A simulation apparatus, comprising
a generation means for generating, from data representing a simulation target space in which buildings and trees exist, simulation data for treating the simulation target space as a plurality of elements, between each two elements of which radiation heat is exchanged; a view factor calculation means for calculating, based on the simulation data generated by the generation means, a view factor related to each two elements, among the plurality of elements, in consideration of their order; a first calculation means for calculating net radiation heat absorbed by each element using view factors calculated by the view factor calculation means; a second calculation means for calculating unsteady spatial distributions of wind speed, temperature and water vapor amount; a third calculation means for calculating temperature of a leaf of each tree in the simulation target space using net radiation heat absorbed by the leaf, temperature of atmosphere in space where the leaf exists, a partial pressure of the water vapor in the atmosphere, and a saturated vapor partial pressure at a surface of the leaf; and a forth calculation means for calculating, by making the first to third means function repeatedly, unsteady spatial distributions of wind speed, temperature and water vapor amount in consideration of exchange quantities of heat and water vapor between a tree canopy of each tree and the atmosphere.