Wyniki wyszukiwania - Biblioteka Nauki

Ten serwis zostanie wyłączony 2025-02-11.

Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl

Ograniczanie wyników

Znaleziono wyników: 3

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: flame tube

Sortuj według:

Ogranicz wyniki do:

The peculiarities of applying CAD/CAE systems for the primary combustion chamber flame tube cycle life prolongation of the tactical military aircraft afterburning turbofan jet engine

100%

Pashchenko S. , Kharchenko O. , Shulhin A. , Chemerys Y.

Journal of KONBiN

2022

tom Vol. 52, iss. 4

167--176

In this article, the computational simulation of the workflow in the primary combustion chamber flame tube of the afterburning turbofan jet engine (ATJE) on the tactical military aircraft was carried out. The geometric model of a flame tube was created and adapted to perform the interrelated calculation of the thermal and stress-strain behaviour of the walls of the flame tube influenced by the operational loads during the computational simulation of the workflow. Quantitative and qualitative analysis of the simulation results was conducted, and the connection between the peculiarities of the workflow and the characteristic damage of the flame tubes, detected during the operation, was established. The possibility of using modern CAD/CAE systems to solve the scientific tasks towards maximizing the cycle life potential of the main and primarily important components of the ATJE on the assessment basis of their damage exhaustion degree was determined.

Small scale gas turbine combustor sizing

84%

Czarnecki M.

Autobusy : technika, eksploatacja, systemy transportowe

2019

tom R. 20, nr 1-2

180--184

Prezentowany artykuł dotyczy projektowania wstępnego komór spalania silników turbinowych klasy mikro. W odróżnieniu od metodyki projektowania komór spalania dużych komercyjnych silników turbinowych, ich mniejsze odpowiedniki należą do konstrukcji eksperymentalnych. Aby dokonać próby budowy na miarę uniwersalnego modelu obliczeniowego należy zbudować bazę wiedzy która pozwoli na jasne wyznaczenie warunków brzegowych dla przyszłych badań. Niewątpliwą zaletą wzorowania się na istniejących rozwiązaniach jest możliwość szybkiego uzyskania prototypowego rozwiązania, bez konieczności głębszego wnikania w skomplikowany mechanizm spalania paliwa w komorach o małej objętości.

Presented article is focused on initial design of small scale combustors for micro scale jest engines. In comparison to the full size equivalent, small combustor are design and manufactured in experimental way. To try building universal numeric model for micro size design is important to acquire as many data as possible to identify boundary conditions for a model. Major advantage of analyzing different design is possibility to quick building prototype design without investigating complex process of combustion.

Numerical simulation of workflow for evaluating flame tube thermocyclic durability

84%

Shulhin A. , Chemerys Y. , Loginov V. , Kharchenko V. , Tulenko I.

Transactions on Aerospace Research

2024

tom Nr 2 (275)

33--43

This paper explores strategies for extending the operational lifespan of flame tubes in turbofan engines - a critical component for maintaining engine efficiency and reliability, in line with global trends aimed at maximizing the use of laid reserves of aircraft engine performance. Utilizing a combination of advanced computational simulations and empirical research, the study meticulously analyzes the internal processes within the flame tube of the AL-31F turbofan engine. A detailed geometric model and finite element grid were created and adapted to simulate various operating conditions and assess their impact on the flame tube’s performance. Special attention is given to understanding the thermal and mechanical stresses that influence its durability and serviceability. The results, compared against experimental data, validate the simulations and are crucial for identifying critical sections prone to damage, thereby facilitating enhanced decision-making regarding maintenance schedules and overhaul practices. This approach not only aims to minimize downtime and reduce maintenance costs but also extends the service intervals for critical engine components, thereby improving thermocyclic durability based on the damage mechanisms identified.