Modeling Flow in Pipes and Heat Transfer Surface C Turbulators at Cross Section in Frme Square (S/H = 1) and the Rib (S/H << 1) Low-Based on Theory Menter
Lobanov Igor Evgenjevich*
1Moscow Air Institute, State Technical University, Russia
Submission:July 12, 2019; Published:July 31, 2019
*Corresponding author: Lobanov Igor Evgenjevich, Moscow Air Institute, State Technical University, Russia
How to cite this article: Lobanov Igor Evgenjevich. Modeling Flow in Pipes and Heat Transfer Surface C Turbulators at Cross Section in Frme Square (S/H = 1) and the Rib (S/H << 1) Low-Based on Theory Menter. Robot Autom Eng J. 2019; 4(5): 555648. DOI : 10.19080/RAEJ.2019.04.555648
Introduction
Study of flow patterns turbulize mainly conducted experimental methods [1], whereas the calculated current research on the subject is quite sparse and only partially dedicated structure particularly intensified currents; in part procedures (for example, in [2]) is used advantageously integrated approach to the problem under consideration. This report directly devoted study structures flows in pipes, intensified sur-face intermittently established protrusions c cross section of a rib in a compara-tive analysis with turbulence square cross section.
The main objective - To investigate theoretically generated eddy zones for pipes with protrusions square and ribbed cross sections through to factor finitely volumetric methods (FKOM) which were successful way tested in calculations similar currents in [2], where basically considered calculations as averaging intensified parameters flows and heat exchange.
Calculation of current for pipe lines with transverse turbulators annular cross section in the form of rib (
the fact that as a result of previously conducted, for example in [2], numerical computations were obtained local and integral the flow characteristics and heat transfer in the straight round pipes with semi-circular and square turbulators with reduction of corresponding current lines.Were constructed the calculated current characteristic line for pipes with sur-face turbulence with cross-sections in the
The results obtained in this study for Low- models calculated data on heat transfer and hydraulic resistance for the conditions
of a square with edges and ()0.15sh== showed that during the transition from the square to the edge takes place as the increase of the hydraulic resistance and heat: relatively high - of the order of 6%.
Conclusion
In conclusion, I would like to add that the resulting local and average parameters of the flow and heat transfer in pipes with over-nhostname the turbulence of the flow cross section in the form of a rib ()0.15sh= for a wide range of the determining parameters
In practical terms, the method allows to improve the weight and size, cardinality, hydraulic, thermal, etc. performance of heat exchangers and heat-exchange equipment of modern aviation and space-rocket production.
References
- Kalinin EK, Dreitser GA, Kopp IZ (1998) Effective heat transfer surface. Energoatomizdat. Pp-408.
- Lobanov IE, Paramonov NV (2011) Mathematical modeling intensified heat exchange when flowing in the channels based on complex models of the turbulent boundary layer. Pp-160.