Numerical investigation of typical valveless pulse combustor working process
نویسندگان
چکیده
منابع مشابه
Valveless pumping: the reflected pulse wave hypothesis
Valveless pumping refers to nonzero mean flow of fluid within a closed loop of viscoelastic tubing, when a compliant section of the loop is rhythmically compressed at particular frequencies. Valveless pumping is thought to play a role in blood circulation in embryos and in cardiopulmonary resuscitation (CPR). Heretofore, the physical mechanism causing valveless pumping has remained a mystery. W...
متن کاملMultidimensional Numerical Simulation of the Reacting Flow in a Pulse Combustor
We have developed a new modeling capability to study the behavior of pulse combustors. Our approach is based on the use of higher-order Godunov methods combined with adaptive strategies to focus computational eeort where it is required and a Cartesian grid formulation for modeling realistic engineering geome-tries. The model computes quasi-one-dimensional, axisymmetric, and fully three-dimensio...
متن کاملNumerical and analytical investigation of an ultrasonic assisted ECAP process
One of the great challenges in the processing of materials using Equal Channel Angular Pressing (ECAP) is the high forming forces required to produce large shear deformation in the material. Researchers show that the friction forces between the die and the sample constitute a great part of the total forming forces. Recently, ultrasonic vibrations are successfully implemented into the ECAP proce...
متن کاملInvestigation of Simple Process Technology for the Fabrication of Valveless Micropumps
This paper presents a simple process technique for the fabrication of valveless micropumps. The process design utilizes standard MEMS process using double-sided anisotropic silicon wet etching process with an additional adhesive bonding technique. The diffuser and nozzle element of the pump with depth of 50 μm, as well as a 150 μm thick silicon membrane are designed and fabricated using only 3 ...
متن کامل3-D Numerical Simulation of Gas Turbine Combustor
This paper presents a numerical solution for a changing combustor geometry. The effects of the geometric change on the main parameters of the chamber are considered. For this purpose the original geometry and the new one are simulated numerically by a 3-D CFD code and the results are compared. Finally, comments are presented regarding this change. A model is used for turbulence modeling and a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Energy Procedia
سال: 2017
ISSN: 1876-6102
DOI: 10.1016/j.egypro.2017.11.107