The Saab Link Forums - View Single Post - Saab Viggen Intercooler Flowbench Results

ERP · 06-26-2004, 05:50 PM

Adrian, you are correct in your assessment. I was using the equations from Maximum Boost and did not convert cfm to lbs air per minute, (Done correctly all calculations should be lbs air and then converted to cfm). The calculations are “back of the envelope” and are only meant to show the limitations of the Viggen Intercooler.
I use a volumetric efficiency (Ev) of 0.85

Airflow=(cid*rpm*0.5*Ev)/1728
PR=(14.7+Boost(gauge))/14.7
Airflow*PR

I liked the last point you made.

06-26-2004, 05:50 PM	#5
ERP Flirting With TSL Addiction Join Date: Jan 2004 Location: Colorado Springs Posts: 546	Adrian, you are correct in your assessment. I was using the equations from Maximum Boost and did not convert cfm to lbs air per minute, (Done correctly all calculations should be lbs air and then converted to cfm). The calculations are “back of the envelope” and are only meant to show the limitations of the Viggen Intercooler. I use a volumetric efficiency (Ev) of 0.85 Airflow=(cidrpm0.5Ev)/1728 PR=(14.7+Boost(gauge))/14.7 AirflowPR I liked the last point you made. __________________ 2008 Turbo X 19T JZW Stg 4, 415 hp, 532 tq 2006 Lotus Elise - Supercharged, 6.9 lbs/hp 2005 9-2x Aero Stg 2 1996 900 'Aero' 2.3t Sold - To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.