Browse Publications Technical Papers 2015-26-0194
2015-01-14

1D Modeling of Expansion tank Flow 2015-26-0194

An expansion tank is an integral part of an automotive engine cooling system. The primary function of the expansion tank is to allow the thermal expansion of the coolant. The expansion tank will be referred as hot bottle in this paper. In the System level modeling of the engine internal flow, it is imperative to accurately model and characterize the components in the system. It is often challenging to define the hot bottle accurately with limited parameters in the 1D modeling. Currently it is very difficult to optimize the system by testing. Since testing consumes a lot of time and changes in development stage. If the hot bottle component is not defined properly in the system network, then the system flow balancing cannot be predicted accurately. In this paper, the approach of creating a 1D modeling tool for hot bottle flow prediction is discussed and the simulation results are compared with the physical test data. The variables selected are inflow loss coefficient, outflow loss coefficient for both inlet & outlet branches of the bottle, minimum and maximum surface pressure, initial liquid level and the simplified geometry of the bottle. 1D simulation is carried out using Flowmaster® software. The inputs for the simulation are pressure, temperature and coolant type and output is the mass flow rate through the bottle. Flow rate values observed from the bench test setup were considered to validate the simulation results and the modeling parameters are optimized using Design for six sigma (DFSS) methodology. Hot Bottle flow rate predicted using the 1D modeling correlated well with the test data within 10% error. This methodology can be used for future programs and helps in optimizing the hot bottle flow early in the product development cycle.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

A Methodology for the Design of Engine Cooling Systems in Standalone Applications

2010-01-0325

View Details

TECHNICAL PAPER

A DFSS Approach to Optimize the Second Row Floor Duct Using Parametric Modelling

2017-01-0176

View Details

TECHNICAL PAPER

2005 Ford GT- Maintaining Your Cool at 200 MPH

2004-01-1257

View Details

X