Computer simulation of the non-steady state burning of solid propellants is achieved by the integration of the partial differential equation describing this phenomenon. The problem is of the parabolic type, with a moving boundary. A continuous-space-discrete-time approximation algorithm is...

A method is discussed how to study by means of hybrid computation the behaviour and (optimal) control of a wide class of non-linear differential systems without changing the analogue patching. A hybrid computer implementation has been set up for studies in the field of world dynamics.

Recent developments have shown the feasibility of implementing sophisticated simulation language facilities on even a modest minicomputer configuration. Unlike conventional simulation languages which, in the main, operate in a non-interactive batch mode, minicomputers generally allow the user to...

A model of the three-phase bridge inverter with a wide range of validity is proposed. This model can be used for the simulation of the inverter induction motor system on a hybrid computer or an analogue computer. In the latter case it is necessary to achieve a logical device which realizes the...

Two classes of algorithms for equation solving are presented and analyzed. These algorithms have been devised in recent years because of the computational facility of the multiprocessor. The first class consists of parallel search methods while the second class consists of asynchronous methods....

In this paper it will be shown first how in a hybrid way a multiplier can be realized. Further we will discuss a hybrid realization of integration with respect to an arbitrary variable.

Optimal approximations are derived for locally linearized partial differential equations with matrices of the same form as Galerkin B-spline approximations. The matrix coefficients are chosen for correct frequency and group velocity of long waves and at four mesh lengths. An overall error of 1%...

The importance of truncation errors made by the computer is emphasized. A precise calculation of the bias for various algorithms of means computation leads us to the notion of optimal precision and optimal simulation length. It is proved that it is wrong to assume that the precision improves...

The boundary-value problem describing the dynamics of an isothermal, semibatch bubble-column slurry reactor was simulated on a EAI 680 analog computer by the method of modal simulation. Details of the simulation are described here. The method enables the evaluation of the steady-state and the...