Keywords
How to Cite
Abstract
Abstract. Introduction. This paper presents the results of mathematical modeling of turbulent flow and heat transfer processes in the spiral heating tube of a pyrolysis reactor.
Materials and Methods. The k-ℇ turbulence model, which accounts for turbulent kinetic energy and its dissipation rate, was employed for mathematical modeling. Numerical simulations were performed using COMSOL Multiphysics 6.1 software.
Results. Numerical simulations were conducted to investigate the distributions of temperature, velocity, and pressure of the steam flow along the heating circuit. The results showed that the steam temperature decreased from 812 to 574 K, while the flow velocity decreased from 3.4 to 1.2 m/s.
Conclusion. The obtained results can be used to analyze thermohydrodynamic processes in the heating circuits of pyrolysis reactors and to improve their structural design parameters.
References
[1]. Xujakulov S. M., Pardayev Z. E., Sherqulov B. G‘. Kondensatsiyalanish jarayonlarini modellashtirishda k–ε modelidan foydalanish // Raqamli sanoat va avtomatlashtirish: texnologik jarayonlar va ishlab chiqarishni boshqarish tizimlarida innovatsion yechimlar: Respublika ilmiy-amaliy anjumani materiallari. – Qarshi, 2025. – 18–19 aprel. – B. 134–140.
[2]. Кузьминов А. В., Лапин В. Н., Черный С. Г. Метод расчета турбулентных течений несжимаемой жидкости на основе двухслойной (k–ε)-модели // Вычислительные технологии. – 2001. – Т. 6, № 5. – С. 73–86.
[3]. Черный С. Г., Шашкин П. А., Грязин Ю. А. Численное моделирование пространственных турбулентных течений несжимаемой жидкости на основе (k–ε)-моделей // Вычислительные технологии. – 1999. – Т. 4, № 2. – С. 74–94.
[4]. Xiao M. et al. Direct numerical simulation of drag reduction in rotating pipe flow up to Reτ ≈ 3000 // Journal of Fluid Mechanics. – 2024. – Vol. 996. – P. 1–17. – DOI: 10.1017/jfm.2024.811.
[5]. Launder B. E., Spalding D. B. The numerical computation of turbulent flows // Computer Methods in Applied Mechanics and Engineering. – 1974. – Vol. 3. – P. 269–289.
[6]. Xuan A., Ren Z., Shen L. Accelerating simulations of turbulent flows over waves leveraging GPU parallelization // Computers & Mathematics with Applications. – 2025. – Vol. 183. – P. 1–19. – DOI: 10.1016/j.camwa.2025.01.031.
[7]. Wang G. et al. Predicting turbulent flow over a backward-facing step using grid-adaptive simulation method // Aerospace Science and Technology. – 2025. – Vol. 158. – Art. 109913. – P. 1–16. – DOI: 10.1016/j.ast.2024.109913.
[8]. Kadivar M., Garg H. Turbulent heat transfer over roughness: A comprehensive review of theories and turbulent flow structure // International Journal of Thermofluids. - 2025. - Vol. 26. - Art. 100967. - P. 1–37. - DOI: 10.1016/j.ijft.2024.100967.
[9]. Xujakulov S. M., Uzokov G. N., Pardayev Z. E., Almardanov H. A., Shodiyev T. O‘. Qattiq materiallarni pirolizlash uchun qurilma: foydali modelga patent № FAP 2932. -05.02.2026.
[10]. Pardaev Z. E., Khuzhakulov S. M., Toshmamatov B. M. Application of modern technologies in the development of energy-efficient technologies // American Journal of Applied Science and Technology. - 2025. - Vol. 5, Issue 2. - P. 56-60.
[11]. Pardaev Z. E., Xujakulov S. M. Issiqlik elektr stansiyalaridagi bug‘ tashlamalari issiqligidan foydalanish usulini ishlab chiqish // Muqobil energetika ilmiy-texnik jurnali. - 2025. - № 1 (16). -B. 125-131.
[12]. Khuzhakulov S., Pardaev Z., Muradov I., Shodiev T. Research of the physical basis of heat transfer in heat exchanger devices // Springer Proceedings in Physics. - 2025. -Vol. 318. -P. 167–182.
[13]. Pardaev Z. E., Xujakulov S. M., Fayzullayev I. M. Issiqlik elektr markazining asosiy texnik-iqtisodiy ko‘rsatkichlarini hisoblash // Muqobil energetika ilmiy-texnik jurnali. - 2025. -№ 4 (21). - B. 100-106.
[14]. Pardaev Z. E., Xujakulov S. M., Yusupov M. A. Muborak issiqlik elektr markazi sxemasiga tatbiq qilinadigan piroliz qurilmasining texnik-iqtisodiy ko‘rsatkichlari // Muqobil energetika ilmiy-texnik jurnali. - 2025. - № 4 (21). - B. 107-112.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Copyright (c) 2026 Pardayev, Z.E. (Muallif)