Application of ohe Total Aproximation Method for the Investigation of the Temperature Regime of a Polychromatic Solid-State Lamp

In this paper the application of the total approximation method for polychromatic solid-state lamp was considered. The main goal of this work was to present an investigation method for the temperature regime of n LEDs based on the investigation of the temperature regime of one LED. There were presented numerical results of the investigated problem

The Structure Modeling of Material Composed of the Orthotropic Crystals

In this paper the model of a elastic composite medium which consists of a matrix containing a set of orthotropic crystals with the random orientation of the anisotropy axes is presented. The axes orientation is described by the Gauss distribution. The numerical investigation is proposed for rectangular plate, when the normal strains are given in the one side. Other sides are free of strain. The finite - difference technique is used for model discretization

Comparison of 2-D and 3-D Diode-Pumped Solid-State Laser Cooling Models

We propose a cooler of a laser material which compensates the thermal gradients caused by the pump radiation by the gradients created by the cooler. The mathematical model of the system is based on the numerical solution of the heat transfer equation using a finite - difference technique. The 3-D and 2-D computer simulations were used to investigate the cooling problem and show the reliability of two-dimensional model