National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Apriorní a aposteriorní odhady chyby v metodě konečných prvků pro Navier-Stokesovy rovnice a aplikace
Burda, P. ; Novotný, Jaroslav ; Šístek, J.
We present applications of a priori and a posteriori error estimates to the calculation of acurate solution of Navier-Stokes equations using the finite element method.
Matematické modely hydraulických systémů, příklady, analýza
Straškraba, Ivan
The purpose of this contribution is to describe some phenomena arising in hydraulic systems. By a hydraulic system we call a network of tubes, pumps, valves, accumulators and other elements designed to fulfil certain function, for example pumping water from one tank to another. To quantify the fluid flow through the system in question we use fundamental physical principles, namely conservation of mass, momentum and energy. In pipes it leads to Navier-Stokes equations simplified with regard to the special properties of the flow. For description of the fluid flow through other hydraulic elements different models are used which must be identified by the help of experiments performed on an appropriately designed test ring.
Homogenizace stacionárních Navier-Stokesových rovnic v perforovaných oblastech
Namlyeyeva, Yu. ; Nečasová, Šárka
Homogenization of the steady Navier-Stokes equations in domain with a fine-grain body was studied. The aim of this paper is to construct the average problem, where we have one more term, vc(x)u(x), where c(x) we get from capacity of the holes.

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