Turbulence measurements in pipe flow using a nano-scale thermal anemometry probe

M. Vallikivi, Marcus Nils Hultmark, S. C.C. Bailey, Alexander Smits

Research output: Contribution to journalArticlepeer-review

71 Scopus citations


A new nano-scale thermal anemometry probe (NSTAP) has been developed using a novel procedure based on deep reactive ion etching. The performance of the new probe is shown to be superior to that of the previous design by Bailey (J Fluid Mech 663:160-179, 2010). It is then used to measure the streamwise velocity component of fully developed turbulent pipe flow, and the results are compared with data obtained using conventional hot-wire probes. The NSTAP agrees well with the hot-wire at low Reynolds numbers, but it is shown that it has better spatial resolution and frequency response. The data demonstrate that significant spatial filtering effects can be seen in the hot-wire data for probes as small as 7 viscous units in length.

Original languageEnglish (US)
Pages (from-to)1521-1527
Number of pages7
JournalExperiments in Fluids
Issue number6
StatePublished - Dec 2011

All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Mechanics of Materials
  • General Physics and Astronomy
  • Fluid Flow and Transfer Processes


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