[b]The problem of incompressible jets with curvilinear walls[/b]
Journal Title: INCAS BULLETIN - Year 2010, Vol 2, Issue 4
Abstract
The jet flow problem concerning the discharge of a fluid (from an orifice in a container) into the atmosphere is studied herein in the framework of the Helmholtz-Kirchhoff model. The problem is reduced to the study of a system of nonlinear equations. Using Leray-Schauder's fixed point theorem we prove that the system of functional equations has at least one solution. Then we present a semi-inverse method which gives us the possibility to calculate numerically the unknown free lines for symmetric jets whose walls consist of semi-infinite straight lines and arcs of circle and for non-symmetric jets whose walls consist of semi-infinite straight lines.
Authors and Affiliations
CARABINEANU Adrian
Numerical study of rocket upper stage deorbiting using passive electrodynamic tether drag
The purpose of this article is a numerical study of the possibility of deorbiting a rocket upper stage from low Earth orbit at EOM (end of mission) by means of passive electrodynamic tether drag. The article is structure...
New Search Space Reduction Algorithm for Vertical Reference Trajectory Optimization
Burning the fuel required to sustain a given flight releases pollution such as carbon dioxide and nitrogen oxides, and the amount of fuel consumed is also a significant expense for airlines. It is desirable to reduce fue...
Experimental determinations of the aerodynamic drag for vehicles subjected to the ground effect
A moving vehicle creates a flow of the surrounding air, continuous and compressible fluid. When the movement is at a constant speed, the air flow is not time dependent and the flow distribution lines are constant. In fac...
Lightweight vitreous carbon material: approaches to making open-pore cellular structure
Cellular vitreous carbons with the open-pore structure are attractive materials in some aerospace applications, such as the super-lightweight structural materials or sandwich core materials in the thermal protection syst...
Using PID Controller and SDRE methods for tracking control of Spacecrafts in Closed-Rendezvous Process
Rendezvous process of spacecrafts is one of major issues in study of aerospace engineering. Tracking control in Rendezvous process is very complex due to the need to fulfill the conditions and constraints to determine th...