Publication detail

Discharge coefficient, effective head and limit head in the Kindsvater-Shen formula for small discharges measured by thin-plate weirs with a triangular notch

POSPÍŠILÍK, Š. ZACHOVAL, Z.

Original Title

Discharge coefficient, effective head and limit head in the Kindsvater-Shen formula for small discharges measured by thin-plate weirs with a triangular notch

Type

journal article in Web of Science

Language

English

Original Abstract

The paper deals with the determination of the discharge coefficient, effective head and newly the limit head in the Kindsvater-Shen formula for the determination of a relatively small discharge of clear water using a thin-plate weir with a triangular notch. The determination of the discharge coefficient, effective head and limit head is based on extensive experimental research and is verified by previous measurements by other authors. The experimental research was characterised by a large range of notch angles (from 5.25° to 91.17°), weir heights (from 0.00 m to 0.20 m), and water temperatures (from 15 °C to 45 °C), as well as a focus on relatively small heads (from 0.02 m to 0.18 m), which is where the strengths of the Kindsvater-Shen formula stand out. The experimental research supplemented existing knowledge about the overflow occurring with small heads and small weir notch angles. The newly determined dependencies in the Kindsvater-Shen formula extended its applicability to weirs with small notch angles and newly enabled the determination of the limit head, which restricts its applicability in the determination of small discharges.

Keywords

Triangular notch (V-notch); Thin-plate weir; Kindsvater-Shen formula; Discharge coefficient; Effective head; Limit head.

Authors

POSPÍŠILÍK, Š.; ZACHOVAL, Z.

Released

4. 2. 2023

Publisher

Institute of Hydrology of the Slovak Academy of Sciences

Location

Bratislava

ISBN

1338-4333

Periodical

Journal of Hydrology and Hydromechanics

Year of study

71

Number

1

State

Slovak Republic

Pages from

35

Pages to

48

Pages count

122

URL

https://sciendo.com/article/10.2478/johh-2022-0040

Full text in the Digital Library

http://hdl.handle.net/11012/209248

BibTex

@article{BUT182379,
  author="Šimon {Pospíšilík} and Zbyněk {Zachoval}",
  title="Discharge coefficient, effective head and limit head in the Kindsvater-Shen formula for small discharges measured by thin-plate weirs with a triangular notch",
  journal="Journal of Hydrology and Hydromechanics",
  year="2023",
  volume="71",
  number="1",
  pages="35--48",
  doi="10.2478/johh-2022-0040",
  issn="1338-4333",
  url="https://sciendo.com/article/10.2478/johh-2022-0040"
}