Numerical investigation on the supersonic flow around a saboted bullet

Quang Tuan Nguyen; Hai Minh Nguyen; Xuan Son Bui

doi:10.5937/vojtehg72-48837

Quang Tuan Nguyen Državni tehnički univerzitet „Le Kui Don”, Fakultet specijalnog mašinstva, Hanoj, Socijalistička Republika Vijetnam https://orcid.org/0000-0002-7741-8232
Hai Minh Nguyen Državni tehnički univerzitet „Le Kui Don”, Fakultet specijalnog mašinstva, Hanoj, Socijalistička Republika Vijetnam https://orcid.org/0000-0002-5170-6228
Xuan Son Bui Državni tehnički univerzitet „Le Kui Don”, Fakultet specijalnog mašinstva, Hanoj, Socijalistička Republika Vijetnam https://orcid.org/0000-0003-4520-5168

DOI: https://doi.org/10.5937/vojtehg72-48837

Ključne reči: protivoklopni metak, pištolj, aerodinamičke karakteristike, Ansys Fluent, CFD, numerička simulacija

Sažetak

Uvod/cilj: U ovom radu proučavaju se aerodinamičke karakteristike specijalnog metka pri nadzvučnoj brzini. Model odabran za studiju bio je pištoljski metak sa odvojivim nosačem (sabotom).

Metode: Korišćen je metod kompjuterski simulirane dinamike fluida (CFD), a za numeričku simulaciju k-ε model turbulencije. Za viskoznost vazduha, kao modela idealnog gasa, primenjena je Saterlandova formula.

Rezultati: Rezultati numeričke simulacije pokazuju ponašanje nadzvučnog strujanja oko metka sa odvojivim sabotom. Variranjem uglova otvaranja segmenata nosača, kao i brzine projektila, uticalo je na njihov aerodinamički otpor koji deluje na nosač kao i na penetrator za korišćenje u kasnijim proračunima procesa odvajanja jezgra/penetratora od nosača.

Zaključak: Studija pokazuje da se kompjuterska aerodinamika može koristiti za dobijanje aerodinamičkog otpora na nosaču i jezgru nakon što metak napusti cev pištolja. Rezultati simulacije važni su za projektovanje protivoklopnih metaka sa odvojivim nosačem.

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Numeričko ispitivanje nadzvučnog strujanja oko potkalibarnog projektila sa odvojivim nosačem (sabotom)

Sažetak

Reference

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