the effect of the particle size distribution on non-newtonian turbulent ...

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Chapter 3 Experimental Work Page 3.6 3.2.2 Mini Rig Figure 3.6: Steel hopper and weigh tank The purpose <strong>of</strong> <strong>the</strong> Mini Rig was to obtain accurate measurements <strong>of</strong> velocity and head loss in laminar flow for <strong>the</strong> determination <strong>of</strong> <strong>the</strong> rheology <strong>of</strong> <strong>the</strong> slurry. Slurry was tapped <strong>of</strong>f from <strong>the</strong> 150rnrn pipeline on <strong>the</strong> East Rig through a 25mm section <strong>of</strong> PVC piping, which included a 25mm Altometer magnetic flux flowmeter, and <strong>the</strong> slurry directed into <strong>the</strong> weigh tank. The weight <strong>of</strong> slurry passing into <strong>the</strong> weigh tank during a data test point, and <strong>the</strong> time taken for that specific volume to ftIl <strong>the</strong> weigh tank, were recorded, in order to ensure that aCCurate velocity readings were being obtained from <strong>the</strong> flowmeter. The back pressure from <strong>the</strong> 150mm pipeline was used as <strong>the</strong> driving force for <strong>the</strong> slurry to pass through <strong>the</strong> Mini Rig. Using slurry from <strong>the</strong> East Rig ensured that <strong>the</strong> same slurry is tested in both rigs ie. East and Mini Rigs. Figure 3.7 depicts <strong>the</strong> Mini Rig used for testing purposes.
Chapter 3 Experimental Work Page 3.7 3.3 MEASURED VARIABLES 3.3.1 Pressure Measurement (a) Pressure Tappings Figure 3.8: The Mini Rig Pressure tappings located in <strong>the</strong> horizontal test section in <strong>the</strong> pipe wall are used for differential pressure measurements. Figure 3.8 shows a typical pressure tapping arrangement that was used. The tapping hole diameter is 3mm and as reported by Hanks (1981) <strong>the</strong> length to diameter (lJD) ratio (ie. length <strong>of</strong> tapping hole to tapping diameter), which is considered critical, was designed according to <strong>the</strong> ratio L = 4 (3.1) D ' to ensure accurate readings. All burrs on <strong>the</strong> inside edge <strong>of</strong> <strong>the</strong> tappings were removed.
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THE EFFECT OF THE PARTICLE SIZE DIS
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Preamble DECLARATION Page iii I, Ga
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Preamble ACKNOWLEDGEMENrS Page v I
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Preamble Page vii CHAPTER 1: INTROD
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Preamble 3.8 Experimental Procedure
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Preamble Page xii LIST OF FIGURES P
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Preamble Page xiv 4.5 Optimum repre
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Preamble NOMENCLATURE Svrnbol Descr
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Preamble T shear stress Pa T y yiel
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Chapter I For example: Introduction
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Chapter 1 Introduction Page 1.5 1.3
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CHAPTER 2
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Chapter 5 Discussion Page 5.4 Whate
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Chapter 5 Discussion Page 5.10 Mood
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Chapter 6 Summary and Conclusions P
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REFERENCES ALVES G E (1949), Flow <
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References Page R.5 METZNER A B (19
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References Page R.8 SPIEGEL M R (19
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APPENDICES
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Appendix A Detailed Pipe Test Resul
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APPENDIXB
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Appendix B Conference Paper ABSTRAC
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Appendix B Conference Paper 2.4.6.3
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Appendix B Conference Paper 4.3.3 K
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Appendix B Conference Paper B.22 SL
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