Exact Beltramian solutions for hemispherically bounded cyclonic flowfields

LL Williams, J Majdalani - Physics of Fluids, 2021 - pubs.aip.org
This study focuses on the development of two analytical models that describe the wall-
bounded cyclonic flowfield in a hemispherical domain. The closed-form solutions that we …

[HTML][HTML] Effects of various geometric parameters on the computed swirl numbers and flow topology in a bidirectional vortex chamber

G Sharma, J Majdalani - Physics of Fluids, 2024 - pubs.aip.org
A finite-volume solver is used to compute the cyclonic motion in a vortex chamber assuming
steady, incompressible, and inviscid flow conditions. A parametric campaign enables us to …

[HTML][HTML] Effects of nozzle inlet size and curvature on the flow development in a bidirectional vortex chamber

G Sharma, J Majdalani - Physics of Fluids, 2021 - pubs.aip.org
A finite-volume solver is used to describe the cyclonic motion in a cylindrical vortex chamber
comprising eight tangential injectors and a variable nozzle size. The simulations are …

[HTML][HTML] A quasi complex-lamellar solution for a hemispherically bounded cyclonic flowfield

J Majdalani, LL Williams - Physics of Fluids, 2021 - pubs.aip.org
This work describes an inviscid solution for a cyclonic flowfield evolving in a hemispherical
chamber configuration. In this context, a vigorously swirling motion is triggered by a gaseous …

Vortex thrust chamber testing and analysis for O2-H2 propulsion applications

M Chiaverini, M Malecki, J Sauer, W Knuth… - 39th AIAA/ASME/SAE …, 2003 - arc.aiaa.org
ABSTRACT A series of static thrust chamber firings were conducted with gaseous oxygen
and hydrogen to investigate the specific impulse performance and thermal behavior of …

[HTML][HTML] An exact irrotational solution for a hemispherically bounded cyclonic flowfield

LL Williams, J Majdalani - Physics of Fluids, 2021 - pubs.aip.org
This study focuses on the development of an internal potential flow solution in the context of
a hemispherically bounded cyclonic chamber. The analysis proceeds from the Bragg …

Exact solution of the bidirectional vortex

AB Vyas, J Majdalani - AIAA journal, 2006 - arc.aiaa.org
SWIRLING motions have attracted much attention in recent years due to the rich structures
that they engender. At one end of the spectrum, one is concerned with understanding …

Transient numerical simulations of a cold-flow bidirectional vortex chamber

O Evdokimov, D Prokhorov, A Guryanov… - Physics of …, 2022 - pubs.aip.org
Bidirectional chambers are well-studied in terms of the flow structure and influence of their
input parameters. However, most of the available studies are based on steady-state or time …

Numerical study of ignition process in vortex cold wall combustion chamber

K Guo, D Sun, Z Zeng - Energy, 2023 - Elsevier
Numerical simulation in a hydrogen-oxygen vortex cold-wall combustion chamber is carried
out to analyze the effects of energy density, spark duration, and spark position on the ignition …

[HTML][HTML] Effects of various inlet parameters on the computed flow development in a bidirectional vortex chamber

G Sharma, J Majdalani - Physics of Fluids, 2022 - pubs.aip.org
We vary the inflow properties in a finite-volume solver to investigate their effects on the
computed cyclonic motion in a right-cylindrical vortex chamber. The latter comprises eight …