- Tytuł:
- A conceptual design and numerical analysis of the mixerless urea-SCR system
- Autorzy:
-
Kaźmierski, Bartosz
Górka, Krzysztof
Kapusta, Łukasz Jan - Powiązania:
- https://bibliotekanauki.pl/articles/2097591.pdf
- Data publikacji:
- 2021
- Wydawca:
- Polskie Towarzystwo Naukowe Silników Spalinowych
- Tematy:
-
NOx
SCR
selective catalytic reduction
wall film
CFD
selektywna redukcja katalityczna - Opis:
- In the present study, an innovative design of a urea-selective catalytic reduction (SCR) system without conventional mixing elements was developed. The aim was to obtain a high degree of urea decomposition, and uniform ammonia distribution at the inlet to the catalyst, while minimising the liquid film deposition and keeping the compact design. The concept of the design was based on creating high turbulence and elongating the flow paths of the droplets. The design was verified through a series of numerical simulations based on the Reynolds-averaged Navier-Stokes (RANS) approach and a discrete droplet model (DDM) spray representation. The analysis included various operating conditions as well as subcooled and superheated sprays. A uniform ammonia distribution was achieved regardless of the operating points and spray properties. Additionally, in the case of a flash-boiling injection, a further reduction of the wall film was observed.
- Źródło:
-
Combustion Engines; 2021, 60, 4; 12--20
2300-9896
2658-1442 - Pojawia się w:
- Combustion Engines
- Dostawca treści:
- Biblioteka Nauki
Artykuł