axisymmetric jets
Recently Published Documents


TOTAL DOCUMENTS

139
(FIVE YEARS 3)

H-INDEX

20
(FIVE YEARS 0)

2021 ◽  
Vol 123 ◽  
pp. 110293
Author(s):  
Tengfei Cai ◽  
Jin-Tae Kim ◽  
Shyuan Cheng ◽  
Fei Ma ◽  
Leonardo P. Chamorro

2021 ◽  
pp. 1475472X2110054
Author(s):  
Nikhil Sohoni ◽  
Aniruddha Sinha

The shooting method is commonly used to solve the linear parallel-flow stability problem for axisymmetric jets, i.e., a flow having one inhomogeneous direction. The present extension to two inhomogeneous directions – i.e., a bi-global stability problem – is motivated by inviscid non-axisymmetric jets. The azimuthal direction is Fourier transformed to obtain a set of coupled one-dimensional shooting problems that are solved by two-way integration from both radial boundaries – centreline and far field. The overall problem is formulated as one of iterative root-finding to match the solutions from the two integrations. The approach is validated against results from the well-established matrix method that discretizes the domain to obtain a matrix eigenvalue problem. We demonstrate very good agreement in two jet problems – an offset dual-stream jet, and a jet exiting from a nozzle with chevrons. A disadvantage of the shooting method is its sensitivity to the initial guess of the solution; however, this becomes an advantage when the need arises to track an eigensolution in a sweep over a problem parameter – say with increasing offset in the dual-stream jet, or with downstream distance from the nozzle exit. We demonstrate the performance of the shooting method in such tracking tasks.


2020 ◽  
Author(s):  
Mohammed Z. Afsar ◽  
Adrian Sescu ◽  
Vasily Gryazev ◽  
Anton P. Markesteijn ◽  
Sergey A. Karabasov

2019 ◽  
Vol 74 (3) ◽  
pp. 65-68
Author(s):  
V. P. Karlikov ◽  
A. T. Nechaev ◽  
S. L. Tolokonnikov

Sign in / Sign up

Export Citation Format

Share Document