Fluid properties of a diesel exhaust

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SUMMARY

The discussion centers on obtaining fluid properties, specifically kinematic viscosity, of diesel exhaust for designing an exhaust system. Participants suggest estimating these properties based on the predominant gases in diesel combustion, primarily carbon dioxide (CO2) and nitrogen (N2). The consensus is to utilize the characteristics of these gases at elevated temperatures to simplify calculations. This approach allows for a more manageable estimation of fluid flows in exhaust systems.

PREREQUISITES
  • Understanding of fluid dynamics principles
  • Familiarity with combustion chemistry, particularly diesel fuel composition
  • Knowledge of gas properties at varying temperatures
  • Experience with exhaust system design and calculations
NEXT STEPS
  • Research the kinematic viscosity of CO2 and N2 at high temperatures
  • Explore methods for estimating fluid properties based on predominant gas composition
  • Learn about the combustion process of diesel fuel and its exhaust products
  • Investigate tools for modeling fluid flow in exhaust systems
USEFUL FOR

Engineers and designers involved in exhaust system development, combustion researchers, and anyone needing to calculate fluid properties for diesel exhaust applications.

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Hello,

Anyone know where I can get fluid properties (specifically kinematic viscosity) of the combustion exhaust form a diesel generator (i am designing an exhaust system and I need to calculate fluid flows). I am not sure the exact chemical makeup of the diesel fuel. An estimation would be fine.

Thanks!
 
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ok, can I do it like this..

diesel is a hydrocarbon...can I just base the fluid properties of the largest constituent? That is, assume the exhaust is 100% of the predominant gas since Its easier to find properties of specific gases at higher temperatures, let's say CO or N2?
 
CO2 is probably the predominant exhaust gas
 

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