Key Words: Flow Rate Measurements, Discharge Measurements, Gibson Method
Key Words: Flow Rate Measurements, Discharge Measurements, Gibson Method
Key Words: Flow Rate Measurements, Discharge Measurements, Gibson Method
2D
2D
turbine no. 2
1-1
Pressure
surge tank
2-2
butterfly valve
Fig. 1: Schematic diagram of supply system of turbines under investigation with marked
hydrometric sections which were used in Gibson method
10 m
60
Pressure tap
Manifold
Fig. 2: Localization of pressure taps at each pipeline section 1-1 and 2-2.
venting valve
from manifold
in section 1-1
from manifold
in section 2-2
Y [%]
40
20
0
80
100
110
120
130
140
16
12
Dp f - calculated pressure
drop caused by friction in
penstock between sections
1-1 and 2-2
8
4
0
-4
80
Q [m3/s]
90
210
180
150
120
90
60
30
0
90
100
110
120
130
140
110
120
130
140
80
90
100
time t [s]
Fig. 4: Recorded and calculated time changes of values related to discharge (flow rate)
measurement by means of Gibson method
References:
Adamkowski A., Janicki W., Steller J.: Comparison between results of flowrate measurement
by means of current-meter, pressure-time and ultrasonic methods, , Proc. of Conf.
HYDROFORUM2005, Kliczkw, December 7-9, 2005 (in Polish). pdf version
Sierra E.F., Adamkowski A., Urquiza B.G., Kubiak J., Lara H., Janicki W.: The Effect of
Boundary Layer Separation on Accuracy of Flow Measurement Using the Gibson Method,
Forum Paper FEDSM2007-37564, Proc. of 5th Joint ASME/JSME Fluids Engineering, July 30
August 2, 2007, San Diego, California, USA, pp. 1-8. pdf version
Adamkowski A., Janicki W.: Influence of some components of pressure-time method
instrumentation on flow rate measurement results, Proc. of Inter. Confer. HYDRO2007,
Granada, Spain, 15-17 Oct. 2007. pdf version
Adamkowski A., Janicki W., Urquiza G. Kubiak J., Basurto M., Discharge measurements
using the classic Gibson method with instrumentation nstalled inside a pipeline, Proc. of
FEDSM2008, ASME Fluid Engineering Conference, August 10-14, 2008, Jacksonville,
Florida USA, FEDSM2008-55309, pp. 1-7. pdf version
Adamkowski A., Janicki W.:A new approach to using the classic Gibson method to measure
discharge, 15th International Seminar on Hydropower Plants, Vienna, 26-28 November,
2008, pp. 511-522. pdf version
Adamkowski A., Kubiak J., Sierra Fernando Z., Urquiza G.,Janicki W., Fernndez J. M., An
Innovative Approach to Applying the Pressure-Time Method to Measure Flow, HRW
(Hydraulic Review Worldwide), Volume 16, number 6 December 2008, pp. 40-49 pdf
version.
Adamkowski A., Krzemianowski Z., Janicki W. 2009, Improved Discharge Measurement
Using the Pressure-Time Method in a Hydropower Plant Curved Penstock, ASME Journal of
Gas Turbines and Power, SEPTEMBER 2009, Vol. 131, pp. 053003-1 - 053003-6. pdf
version
Adamkowski A. Janicki W., A method for measurement of leakage through closed turbine
wicket gates, Proceedings of the HYDRO2009, International Conference and Exhibition,
Lyon, France 26-28 October 2009, pp. 1-8. pdf version.
Adamkowski A.: Essential methods of SHP efficiency testing, Keynote address at the SHP
Research&Development Actors Network Meeting, The Szewalski Institute of Fluid-Flow
Machinery, Gdansk, September 10-11th, 2009 pdf version.
Adamkowski A., Janicki W., Selected problems in calculation procedures for the Gibson
discharge measurement method, 8th International Conference on Hydraulic Efficiency
Measurement - IGHEM 2010, Rookie, India, pp. 1-9. pdf version
For more details please contact:
Adam Adamkowski, DSc., Ph.D.
The Szewalski Institute of Fluid-Flow Machinery, PASci (IMP PAN)
Centre for Mechanics of Liquids, Department of Hydraulic Machinery
ul. Fiszera 14;
80-952 Gdask, Poland
Phone: +48 58 69 95 212
Fax: +48 58 341 61 44
Mobile: +48 606 571 642
E-mail: aadam@imp.gda.pl