PSI - Issue 32

Available online at www.sciencedirect.com Available online at www.sciencedirect.com Sci nceD rect Structural Integrity Procedia 00 (2021) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2021) 000 – 000

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Procedia Structural Integrity 32 (2021) 209–215

© 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XXIIth Winter School on Continuous Media Mechanics” Abstract Multipoint hydrostatic leveling system (HLS) is a long-term measuring instrument of the vertical displacement field of various objects. The HLS consist of necessary number of communicating measuring vessels filled with a liquid. Dynamic processes of liquid movement in this system depend on its geometric dimensions and liquid properties. This paper uses a dimensionless hydraulic model of liquid movement in hydrostatic leveling system with an arbitrary number of sensors. Numerical simulations of dynamic transients in the HLS containing 4 sensors and 1 reservoir are performed. The estimates of the stabilization time for various liquid properties and geometric dimensions of the level are carried out. The analysis of the results obtained allows one to select the type of fluid and the combination of geometric dimensions that provide the minimum possible value of the interval of fluid stabilization after a disturbance. These estimates are made for water, silicon fluids and ethylene glycol water solution. © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer- review under responsibility of the scientific committee of the XXIIth Winter School on Continuous Media Mechanics” Keywords: Monitoring; Hydrostatic leveling system; Liquid occillation, Stabilization time. 1. Introduction Long-term measurements of vertical displacements can be provided by a hydrostatic leveling system (HLS). The examples of the use of such systems for monitoring various structures are described by Morishita (2009), Meier (2010), Chen (2011), Sun (2015), Yi (2019). The HLS consists of communicating measuring vessels filled with a liquid. The free surfaces of liquid in the vessels form a single horizontal plane, the vertical position of which is Abstract Multipoint hydrostatic leveling system (HLS) is a long-term measuring instrument of the vertical displacement field of various objects. The HLS consist of ecessary number of c mmunicating measuring vessels fill d with a liquid. Dynamic pr cesses of liquid mov ment in th system depend on its geo etric dimensions and liquid properties. This paper uses a dimensionless hydraulic mod l of liquid movement i hydrostatic level ng system with an arbitrary numb r of sensors. Numerical simulation of ynamic transients in the HLS containing 4 sensors and 1 res rvoir are performed. The estimat s f the stabiliz tion time for various liquid properties and geometric dimensio s f the level are ca ried out. The analysis of the results obt ined ll ws one to select the type of fluid and the co bination of geometric dimensions that provide the min mum possib e value of the interval of fluid s abilizati n after disturbance. These estimates are mad for wa er, silicon fluids and ethylene glycol water solut on. © 2021 The Authors. Publ hed by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer- review under responsibility of scientific committe of the XXIIth Winter School on Continuous Media Mechanics” Keywords: Monitoring; Hydrostatic leveling system; Liquid occillation, Stabilization time. 1. Introduction Long-term measurements of vertical displacements can be provided by a hydrostatic leveling system (HLS). The examples of the u e of such systems for monitori g v rious structures are described by Morishita (2009), Meier (2010), Chen (2011), Sun (2015), Yi (2019). The HLS consists of communicating measuring vessels filled with a liquid. The free surfaces of liquid in the vessels form a single horizontal plane, the vertical po ition of which is XXIIth Winter School on Continuous Media Mechanics Dynamic processes in hydrostatic leveling systems with various configuration and fluid properties R. Tsvetkov a *, I. Shardakov a , A. Shestakov a , G. Gusev a , I. Glot a , V. Epin a a Institute of Continuous Media Mechanics Russian Academy of Science, 1,Koroleva str., Perm, 614013,Russia XXIIth Winter School on Continuous Media Mechanics Dynamic processes in hydrostatic leveling systems with various configuration and fluid properties R. Tsvetkov a *, I. Shardakov a , A. Shestakov a , G. Gusev a , I. Glot a , V. Epin a a Institute of Continuous Media Mechanics Russian Academy of Science, 1,Koroleva str., Perm, 614013,Russia

* Corresponding author. Tel.: +7-342-237-8330; fax: +7-342-237-8487. E-mail address: flower@icmm.ru * Corresponding author. Tel.: +7-342-237-8330; fax: +7-342-237-8487. E-mail address: flower@icmm.ru

2452-3216 © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer- review under responsibility of the scientific committee of the XXIIth Winter School on Continuous Media Mechanics” 2452-3216 © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer- review under responsibility of the scientific committee of the XXIIth Winter School on Continuous Media Mechanics”

2452-3216 © 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XXIIth Winter School on Continuous Media Mechanics” 10.1016/j.prostr.2021.09.030