Affiliation:
1. Dipartimento di Meccanica, Università della Calabria - 87036 Arcavacata di Rende (CS)
Abstract
Abstract
The characteristics of the seeding particles, which are necessary to implement the laser Doppler anemometry (LDA) technique, may significantly influence measurement accuracy. LDA data were taken on a steady-flow rig, at the entrance of the trumpet of the intake system of a high-performance engine head. Five sets of measurements were carried out using different seeding particles: samples of micro-balloons sieved to give three different size ranges (25–63μm,90–200μm, and standard as received from the manufacturer 1–200μm), smoke from a “home-made” sawdust burner (particle size ⩽1μm), and fog from a commercial device (particle size around 1μm). The LDA data were compared with the results of two-phase computational fluid dynamics simulations. The comparison showed a very good agreement between the experimental and numerical results and confirmed that LDA measurements with particle dimensions in the order of 1μm or less represent the actual gas velocity. On the contrary, quite large particles, which are often used because of their cost and cleanliness advantages, introduce non-negligible errors.
Reference18 articles.
1. Meyer, J. F.
, 1991, “Generation of Particles and Seeding,” Lectures Series 1991-08, Von Karman Institute for Fluid Dynamics, pp. 1–42.
2. Bova, S., and Amelio, M.
2001, “LDA Investigation on Valve-Wall and Valve-Valve Flow Interaction in High-Performance 4-Valve I.C.E.,” SAE paper no. 2001-01-1309.
3. Influence of the Seeding Characteristics on LDA Measurements at the Intake Entrance of an ICE;Algieri
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