CFD Analysis on Jet Decay Characteristics of Supersonic Jet through a CD Nozzle with a Cross-Wire
Main Article Content
Abstract
In this work, a computational fluid dynamics analysis is undertaken for establishing the decay characteristics through a CD nozzle fitted with a crosswire for a supersonic jet. The study focused on the axial jet decay and radial pressure distribution of unheated jets operating at Mach number 1.75 under various nozzle operating pressure conditions (NPR 5, 5.4 and 6.4). The results provide insights into the performance variance between the crosswire and baseline nozzles, particularly regarding flow characteristics, with implications for efficient nozzle design across diverse applications. Comparative analysis with experimental data revealed good agreement between the axial jet decay of the baseline nozzle and existing literature. Research on CD nozzle of circular jets with crosswire configurations at various operating conditions of over-expansion, near optimum and under-expansion conditions shows significant reductions in supersonic jet core length with the implication of crosswire, indicating enhanced mixing. Investigations into cross-wires with 2% blockage areas showed reductions in jet core length ranging from 10% to 29% compared to baseline nozzle jet.
Article Details
Issue
Section
Articles
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish with this journal agree to the following terms: a. Authors retain copyright and grant the journal right of first publication, with the work two years after publication simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal. b. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal. c. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).