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Ultrasonic tomography for airflow velocity profile measurement using multipath transducers
Kurniadi D.a, Trisnobudi A.a, Irmawan D.a, Suyanto S.a
a Department of Engineering Physics, Bandung Institute of Technology, Bandung, 40132, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2014 International Society for Industrial Process Tomography.The velocity profile is the distribution of velocities in the axial direction over the cross section of the circular pipe. The ultrasonic flowmeter using transit time or time of flight method is widely used for industrial flow velocity measurement. Based on the ultrasonic wave path configuration, there are two kinds of ultrasonic flowmeter, i.e. singlepath and multipath types. This paper discusses an experiment measuring the flow velocity profile using the transit time ultrasonic flowmeter with modified multipath configuration. The proposed system consists of a set of transmitting transducers and a set of receiving transducers surrounding the pipe at different positions. This configuration made the ultrasonic path in various directions and positions for detecting the flow. The ultrasonic waves are propagated from transmitting transducers by turns and are received simultaneously by the receiving transducers.The axial velocity in each ultrasonic path is detected and measured. The total average axial velocity was determined by using the weighting method. To reconstruct the velocity profile, the tomographic method is employed. In our case, the flow velocity obtained in each ultrasonic path is made into the projection data. Then the velocity profile of flow can be estimated. The experiment was performed for measuring the air flow using the circular pipe with 0.20 [m] diameter, 8 transmitting transducers and 8 receiving transducers. Thus there were 64 ultrasonic wave paths. The results showed that the proposed system can, in principle, be used for measuring the average velocity and the velocity profile of air flow inside the pipe.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Distribution of velocity,Multipath,Time of Flight methods,Tomographic methods,Transit time,Transit-time ultrasonic flowmeters,Ultrasonic tomography,Velocity profiles[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Flow velocity profile,Multipath transducers,Tomography,Transit time,Ultrasonic flowmeter[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]