MOVECOMP: a static-multicell-airflow-model.

This paper deals with a new computer program, MOVECOMP, which calculates the in- and exfiltration and the airflows between the rooms of a multicell building. The calculations are made due to wind and thermal forces and the characteristics of the leakage openings. MOVECOMP was developed to be user friendly: input data are limited and output data are very flexible. The userchooses which output he wants from a menu. The building is described with asystem of pressure nodes, connected to each other through flow-pressure difference functions. The program is able to handle an almost general building. A modified Newton-Raphson method was chosen to solve the nonlinear system of equations. MOVECOMP is intended to be incorporated in a more complex model, AIRCOMP, which will also be used to calculate the airflows in a ventilating system.