https://nova.newcastle.edu.au/vital/access/ /manager/Index en-au 5 Analysis of turbulence energy spectrum by using particle image velocimetry https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:17143 Wed 11 Apr 2018 15:39:34 AEST ]]> A comparison of different methods for estimating turbulent dissipation rate in under-resolved flow fields from synthetic PIV images https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:49744 Tue 30 May 2023 15:37:04 AEST ]]> Dynamics of a single bubble rising in a quiescent medium https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:46747 Tue 09 Jan 2024 11:43:13 AEDT ]]> Chacterisation of single and binary phase turbulence in an oscillating grid system https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:27517 Thu 13 Sep 2018 16:49:08 AEST ]]> Stereo PIV/Shadowgraphy used to study bubble characteristics in turbulent flows https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:8961 Sat 24 Mar 2018 08:37:10 AEDT ]]> Evaluation of local energy dissipation rate using time resolved PIV https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13556 Sat 24 Mar 2018 08:17:06 AEDT ]]> PIV and hot wire measurements in the far field of turbulent round jets https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:11425 Sat 24 Mar 2018 08:13:01 AEDT ]]> Detachment of a bubble anchored to a vertical cylindrical surface in quiescent liquid and grid generated turbulence https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:19539 Sat 24 Mar 2018 08:02:05 AEDT ]]> Comparison of specific energy dissipation rate calculation methodologies utilising 2D PIV velocity measurement https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:27090 Sat 24 Mar 2018 07:40:35 AEDT ]]> On the analysis of a coarse particle free falling material stream https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:28145 Sat 24 Mar 2018 07:36:36 AEDT ]]> Characterization of turbulence in rectangular bubble column https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:18621 Mon 20 Jul 2015 16:31:13 AEST ]]> Effect of bubble on the pressure spectra of oscillating grid turbulent flow at low Taylor-Reynolds number https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:35930 b = 2.70 and 3.52 mm) rise using the non-intrusive two-dimensional (2D) particle image velocimetry (PIV) at the low Taylor-Reynolds number (Reλ) ranging from 12 to 60. Using the measured PIV velocity data, the instantaneous pressure fluctuations were estimated by integrating the full viscous form of the Navier-Stokes (N-S) equation and compared with three dimensional (3D) computational fluid dynamics (CFD) simulations. A spectral slope of -7/3 was found in the inertial subrange of the single-phase pressure spectrum. In contrast, the two-phase pressure spectrum exhibited a slope less steep than -7/3 in the inertial subrange because of the extra production of turbulence in the presence of bubble. For single-phase flow, the ratio of pressure integral length scale to the velocity integral length scale (Lp/L) was found to be a constant of about 0.67, and the pressure Taylor microscale (λp) was approximately 0.79 ± 0.03 of the velocity Taylor microscale (λ) for a low Reynolds number. The scaling ratio based on the single-phase experimental results were compared with existing theory and DNS results and found to accord well; however, these ratios deviate from theoretical values for two-phase flow. Also, the energy dissipation rate was evaluated based on the pressure spectrum and found the over-predicted (~ 31%) values relative to those calculated from the velocity spectrum.]]> Fri 19 Jun 2020 14:48:42 AEST ]]>