INVESTIGATION THE EFFECT OF BLADE’S SLOT ON ROTATING STALL OF HIGH SPEED BLOWER
Experimental and numerical investigations to study the effect of add one slot to the impeller blades on the rotating stall and pressure fluctuations in a high speed centrifugal blower. The experimental test rig which includes a blower of centrifugal, transducer of pressure as well measurement ins...
| Main Authors: | , , |
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| Format: | Article |
| Language: | Arabic |
| Published: |
Mustansiriyah University/College of Engineering
2019-09-01
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| Series: | Journal of Engineering and Sustainable Development |
| Subjects: | |
| Online Access: | http://www.jeasd.org/images/2019edition/issue_4/12.pdf |
| Summary: | Experimental and numerical investigations to study the effect of add one slot to the impeller
blades on the rotating stall and pressure fluctuations in a high speed centrifugal blower. The experimental
test rig which includes a blower of centrifugal, transducer of pressure as well measurement
instrumentations which constructed for this study. A data acquisition system (hardware) and its (software)
have been developed to transfer the signal from transducer of pressure to the computer then analysis with
time. The experimental work has been implemented through measuring the static pressure variation as
well fluctuating of pressure for two cases of impeller (without slot and with one slot). Static pressure has
been taken in different points prepared on the front-wall of the volute casing along one track for two cases
of the impeller. This track is angular track about the impeller. The results of experimental show that the
fluctuations of pressure increase with the mass flow rate decrease. Also the results indicate that
fluctuations of pressure decrease with adding slots into the impeller blades. The simulation of numerical
has been carried out on blower of centrifugal into analysis both field of flow and fluctuations of pressure
through using ANSYS (FLUENT 15). The simulation of numerical has been completed through solve the
continuity and momentum equations with moving reference framework technique inside the blower. The
numerical simulation results show a good agreement with the results of experimental. |
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| ISSN: | 2520-0917 2520-0925 |