Numerical modeling of coercible gas natural convection for IGU thermalphysic behavior analysis

Stanislav A. Chesnokov, Senior lecturer and Boris I. Krasnopolskiy, Post-graduate student, Department of Applied Mathematics, Moscow Engineering Physics Institute (State University) & Alexander G. Chesnokov, Head of the standardization and testing departm

We had the following aims as object of our research:
- Numerical modeling of IGU behavior taking into account main heat transfer mechanisms, estimation of every mechanism contribution in heat distribution;
- Evaluation of applicability domain for “old” standard techniques;
- Investigation of influence for complex effects, known in practice but not shown in previous IGU models, onto glass filler structure and its thermalphysic properties.
Our main results:
- New physical model of IGU was formalized;
- Optimized and complex algorithm of numerical solving was developed;
- Results of calculations were compared with other models;
- In special case we constructed analytical solution of the problem;
- In the different cases we compared fast calculations according to standards and very slow calculations in our model taking into account various combinations of heat transfer ways;
- Some results were obtained concerning applicability domain of the standards techniques;
- Corrected fast method for IGU heat resistance properties calculation was proposed;
- Distribution of heat resistance along IGU altitude subject to spacer width was obtained, some graphs of temperature against altitude were plotted, and edge freezing effect was illustrated;
- And we provide some result about dependence of heat transfer from outer temperature for various IGU types including low-e.

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The Authors

	Mr. Stanislav Chesnokov senior lecturer MEPhI During last 15 years I’ve been working in the field of applied mathematics and computer modelling. The main themes of my research are numerical researches of mechanical, optical and thermal properties... Read more
	Mr. Alexander Chesnokov Glass Research Institute Alexander Chesnokov is the author of more than 30 standards of USSR, CIS, Russia concerning different types of glass products for building and technical purposes and more than 80 publications in the f... Read more