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the CONCLUSION And OUTPUTS

On the basis of the calculations set forth above it is possible to draw following outputs.

The review and the analysis of design procedures of systems of heating and car ventilation has displayed, that the integral approach which allows to define only average parametres is put in their fundamentals.

For calculation of systems of heating and ventilation classical hydraulic calculation, with use of an estimation of local and linear losses is used.

Integral methods of calculation do not allow to receive the necessary information on current structure in airlines of system of heating and the car salon, necessary for creation of effectively working system of heating and ventilation.

Instead of existing techniques it is necessary to use new technique of calculation which consists of following stages:

On the basis of the designer documentation the geometry of an examined plant, with use CAD - software packages (Solid Works, Unigraphics, CATIA) is under construction;

Translation of the received geometry in CAE - software packages or prsprotsessornye modules to them (SAMM, ICEM or ANSYS/Stractural);

Creation of an is final-element grid of settlement area of an examined plant;

Translation of the received elements and nodes in the settlement module of STAR-CD;

Numerical calculation of currents in heating and ventilation system;

The analysis of the received data;

Recommendations about elimination of the determined deficiencies.

The three-dimensional mathematical model of geometry of the case of system of heating and ventilation on which fundamentals it is constructed is developed, is final - an element grid of settlement space.

The analysis of physical processes on a foundation which assumptions for calculation of system of heating and ventilation are accepted is carried out. The choice of mathematical model of a current and model of a porous body are justified.

The design procedure of system of heating and ventilation of the car with use of the certificated software packages of STAR-CD and ANSYS/Stractural is developed, approved and verified.

The structure of a three-dimensional turbulent stream in the regular multiway case of system of heating of the car depending on an operating mode of a supercharger is in details examined.

Local and integral performances of stationary internal currents in paths of system of heating of the car depending on geometry and boundary conditions are received.

Recommendations for a justification rational on aerodynamic resistance of a construction of system of heating of the car are formulated.

Researches have displayed, that the stream structure in the heater case (the arrangement of stagnant zones and their size and as aerodynamic resistance of airlines), basically, depends on heater geometry (a heat sink arrangement, zaslonok, the shape of paths of airlines, the shape and an arrangement of diffusers) and, in insignificant degree, depends on a high-speed operating mode of a supercharger and intensity of turbulence on an input in a heater.

Numerical research of the new case of a heater of the car is carried out. The result of research has allowed to determine zones of a tear of a stream and incorrectly oriented streams (in a condition of ventilation the stream hits about a heater wall, in a condition of the common heating the majority is directed to salon through central deflektory, instead of on a windscreen). Change in geometry of channels of a heater will eliminate these deficiencies of air current.

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A source: Matveev Denis Viktorovich. WORKING out of TECHNIQUE of CALCULATION of SYSTEM of HEATING And CAR VENTILATION. The thesis on competition of a scientific degree of a Cand.Tech.Sci. Izhevsk - 2006. 2006

More on topic the CONCLUSION And OUTPUTS:

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  5. 3.4. Outputs
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  10. 1.6 Outputs under the head
  11. 2.5 Outputs under the head
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