ALGORITHM OF HEAT FLOW VISUALIZATION IN AN INTEGRATED CONSTRUCTION CAD SYSTEM
Introduction. A visualization module provides the creation of a loop in construction CAD OK based on the similarly named algorithm. This problem is one of priority tasks at the stage of designing the boundary loop. The purpose of the work is to develop a subsystem of designing the boundary loop of heat networks for modern construction CAD, implementing visualization tools of designing heat flows in engineering networks with the possibility of forecasting the heat flow type and on-line computation of necessary parameters of a structure or a building based on the heat flow visualization algorithm. As a result iterative algorithm implementation was offered using local optimization. The first step of the algorithm is the creation of initial approximation, which is in the tolerance range and it corresponds to norms based on given limitations in the tracing algorithm. In case, when a great number of limitations are added in the tracing task, penalty functions can be chosen as the objective function and the initial solution is out of the tolerance range.. Penalty coefficients are formalized as formulas. Practical significance of the work is to realize the building envelope of the offered algorithm based on penalty coefficients, which allow solving the problem of loop creation, in the CAD visualization subsystem. The algorithm is based on local optimization principles with the transition to the unconstrained optimization problem that allows taking on permitted values of thermal data, which are not included into the range of possible values. The use of penalty coefficients allows organizing the optimization process, forming the optimum in relation to the data set, defined by the user, as well as doing further optimization based on correction factor redirections.