236
10 Intrusive Measurement Techniques
Fig. 10.14 An assembly of rakes consisting of 143 hot wires probes during the boundary layer
measurement in the WALLTURB facility (© Institut PPRIME)
wire probes are susceptible to frequent damage, however they are relatively simple
to operate and cheap. The issues related to phase-shits or lags in a spatially evolving
flow can be addressed by employing multiple probes on a hot wire rake or grid, as
shown in Fig. 10.14 and this depends on the type of flow to be measured.
10 Intrusive Measurement Techniques
Fig. 10.14 An assembly of rakes consisting of 143 hot wires probes during the boundary layer
measurement in the WALLTURB facility (© Institut PPRIME)
wire probes are susceptible to frequent damage, however they are relatively simple
to operate and cheap. The issues related to phase-shits or lags in a spatially evolving
flow can be addressed by employing multiple probes on a hot wire rake or grid, as
shown in Fig. 10.14 and this depends on the type of flow to be measured.