A simulation of storm water is presented for developing a physical understanding of storm runoff from urban basins. A new three- dimensional cloud model simulates storm rainfall. The model contains nine prognostic equations: three momentum equations, pressure and thermodynamic equations, three moisture and water equations, and a subgrid kinetic energy equation. A par ticular coordinate transformation is used. It maps a simulation domain with an irregular lower boundary onto a rectangular domain. A finite difference scheme which conserves heat, mois ture, water substances, and subgrid-scale motion solves the trans formed equations. The rainfall is averaged in space and time for a basin to obtain the hyetograph. We use the Road Research Lab oratory Hydrograph method (the RRL method) to compute the storm runoff hydrograph for the basin from the hyetograph. A simulation result for a simplified atmospheric condition is presented.
Deardorff, J.W.1975. "The Development of Boundary-Layer Turbulence Models for Use in Studying the Severe Storm Environment" In Proceedings ofSESAME Meeting (Boulder). NOAA-ERL, 251-264.
2.
Gal-Chen, T. and R.C.J. Somerville .1978. "On the Use of a Coordinate Transformation for the Solution of the Navier-Stokes Equations." Journal of Computational Physics17: 209-228.
3.
Horibata, Y.1986a. "Rainstorm Simulation by a Three-Dimensional Cloud Model " journal of The Japan Society for Simulation Technology (in Japanese) 5: 34-43.
4.
Horibata, Y.1986b. "On the Stability of the Finite Difference Scheme Employed in a Rainstorm Simulation." Journal of The Japan Society for Simulation Technology (in Japanese) 5: 97-101.
5.
Horibata, Y.1987. "Study of a Finite Difference Scheme Employed in a Rainstorm Simulation: Its Stability and Conservative Property." Journal of The Japan Society for Simulation Technology (in Japanese) 6: 90-100.
6.
Kessler, E.1969. On the Distribution and Continuity of Water Substance in Atmospheric Circulation. Meteor. Monogr. No. 32. Amer. Meteor. Soc.
7.
Klemp, J.B. and R.B. Wilhelmson .1978. "The Simulation of Three-Dimensional Convective Storm Dynamics." Journal of Atmospheric Science35: 1070-1096.
8.
Rogers, R.R.1979. A Short Course in Cloud Physics. Pergamon Press, Oxford.
9.
Soong, S.T. and Y. Ogura.1973.'A Comparison Between Axisymmetric and Slab-Symmetric Cumulus Cloud Models." Journal of Atmospheric Science30: 879-893.
10.
Terstriep, M.L. and L.B. Stall.1969. "Urban Runoff by Road Research Laboratory Method Journal of the Hydraulics Division, Proceedings of the American Society of Civil Engineers 95 no.Hy6: 1809-1834.
