Accession Number:

ADA589020

Title:

Development of a Test Rig for Measuring Isentropic Bulk Modulus

Descriptive Note:

Interim rept. May 2010-Jan 2013

Corporate Author:

SOUTHWEST RESEARCH INST SAN ANTONIO TX TARDEC FUELS AND LUBRICANTS RESEARCH FACILITY

Report Date:

2013-01-01

Pagination or Media Count:

24.0

Abstract:

Bulk modulus is a measure a fluids compressibility. In fuel systems, the bulk modulus of the fuel can have a significant impact on fuel behavior and performance in engines by affecting injection timing. While the behavior of most petroleum-derived fuels are well-understood, the emergence of new bio-based and synthetic fuels have demonstrated some properties that are beyond current experience. Therefore, as part of a complete fit-for-purpose analysis, the need for a bulk modulus test rig was identified. The objective of this effort was to design and build a test rig for measuring isentropic bulk modulus at pressures and temperatures up to 30,000 psi and 100 deg C, respectively. To-date, the measurement of high pressuretemperature speed-of-sound on several fluids has been successfully demonstrated. Plans are underway to incorporate a high pressuretemperature densitometer to improve the bulk modulus accuracy.

Subject Categories:

  • Fluid Mechanics
  • Fuels

Distribution Statement:

APPROVED FOR PUBLIC RELEASE