Vol.2, No 7/2, 1997 pp. 331 - 340
UDC: 532; 532.526;
PARAMETRIC METHOD IN UNSTEADY MHD BOUNDARY
LAYER THEORY OF FLUID WITH VARIABLE ELECTROCONDUCTIVITY
V. Saljnikov*, Z. Boričić**,
D. Nikodijević**
* Faculty of Mechanical Engineerig, 27. Marta 80, YU-11000 Belgrade
** Faculty of Mechanical Engineerig, Beogradska 14, YU-18000
Niš
Abstract. In this paper is considered unsteady plane MHD boundary
layer. The fluid is incompressible and its electroconductivity is the function
of the velocity ratios. By introducing the new variables and also two groups
of parameters, the universal equation has been obtained for all electroconductivities
which depend on the velocity ratio. From in the such way obtained universal
equation, it can be obtained the universal equations for particular electroconductivities.
PARAMETARSKA
METODA U TEORIJI NESTACIONARNOG MHD GRANIČNOG SLOJA FLUIDA PROMENLJIVE
ELEKTROPROVODNOSTI
U radu se razmatra nestacionarni ravanski
MHD granični sloj. Fluid je nestišljiv a njegova elektroprovodnost je funkcija
odnosa brzina. Uvođenjem novih promenljivih a zatim i dva skupa parametara
dobijena je univerzalna jednačina za sve elektroprovodnosti koje zavise
od odnosa brzina. Iz tako dobijene univerzalne jednačine dobijaju se univerzalne
jednačine za konkretne promene elektroprovodnosti.
