https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24592 Wed 11 Apr 2018 17:21:40 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:7367 Wed 11 Apr 2018 17:20:30 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:17050 Wed 11 Apr 2018 15:36:30 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:28332 Wed 11 Apr 2018 14:39:34 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:10777 Wed 11 Apr 2018 12:51:22 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:3131 Wed 11 Apr 2018 12:39:22 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:15262 102) indicate that, to obtain a 5/3 scaling range, R λ must exceed 103. The ratio (5/3 + m u )/m θ is approximately 2, in close conformity with the proposal of Danaila and Antonia [“Spectrum of a passive scalar in moderate Reynolds number homogeneous isotropic turbulence,” Phys. Fluids21, 111702 (2009)].]]> Wed 11 Apr 2018 11:48:55 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:3135 Wed 11 Apr 2018 11:40:29 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:3136 Wed 11 Apr 2018 10:50:12 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:3134 Wed 11 Apr 2018 10:22:48 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:3129 Wed 11 Apr 2018 09:58:36 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:4524 10) channel flows, but exhibited well defined secondary flows in the whole cross section. Bed shear stresses and turbulence patterns were consistent with the secondary flow cellular circulation. These results contradict the general perception that secondary circulation cells die out at a distance of b > 2.5 h from the walls. The behavior was attributed to the bed roughness (k(s)/h similar to 0.1) and to the difference in roughness between bed and walls, the latter being much smoother. The results allowed for quantification of hydrodynamic variability in terms of secondary velocities (5% of mean flow velocity), cores of high streamwise velocities (10% higher than surrounding flow) and bed shear stress (20% oscillation with respect to cross sectional averaged value). All these patterns are consistent with the very few results reported in the literature for similar roughness conditions. These results can be used to assess the background flow conditions existing in a straight channel with a plane bed, before the addition of pools and riffles as part of a restoration strategy for streams that have been channelized and do not present the flow variability needed to enhance habitat conditions.]]> Wed 11 Apr 2018 09:47:02 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:1305 Wed 11 Apr 2018 09:34:13 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:49275 Wed 10 May 2023 12:17:02 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:55091 Wed 10 Apr 2024 08:37:48 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:46341 Tue 14 Nov 2023 14:55:52 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:33371 Tue 03 Sep 2019 18:26:59 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:37627 Thu 30 Mar 2023 09:07:41 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:52749 Thu 26 Oct 2023 09:18:46 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:36662 Thu 25 Jun 2020 10:45:29 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:488 Thu 25 Jul 2013 09:09:52 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:41028 Thu 21 Jul 2022 12:22:18 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:51070 Thu 17 Aug 2023 10:22:44 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39648 Thu 16 Jun 2022 15:16:03 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:32954 f₁, has been proposed (see for example Joshi et al. (2001)). Briefly, the LSA analysis utilises the velocity fluctuations of both the dispersed and continuous phases associated with the specific energy dissipation rate of the two phase mixture. Typically, the specific energy dissipation rate is correlated with the density of the bed. The previous analysis, however, does not consider the energy input which associated with the turbulence intensity (velocity fluctuations) of the incoming liquid stream. Usually, this component can be ignored in sparged bubble columns because its magnitude is relatively small and it also decays in the axial direction. In plunging liquid jet bubble columns the liquid is introduced as a high speed jet that entrains gas which is then broken into fine bubbles in the Mixing Zone. The bubby mixture then passes into the Two Phase Flow Zone where instabilities can be generated. The Mixing Zone is a region of high energy dissipation resulting in relatively large liquid velocity fluctuations, which can directly influence the instability of the Two Phase Flow Zone. In this study the existing linear stability analysis is modified to include the influence of inlet liquid velocity fluctuations on the stability parameter, f₁. The modified theory is applied to the previous work of Evans (1990) for a plunging liquid jet bubble column to determine the critical gas volume fraction at which transition takes place in the Two Phase Flow Zone. In order to apply the model, drift-flux analysis has been used to obtain bubble diameter as a function of gas and liquid superficial velocities, and computational fluid dynamics has been utilised to quantify the velocity fluctuations of the liquid exiting the Mixing Zone.]]> Thu 16 Aug 2018 13:36:04 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:27517 Thu 13 Sep 2018 16:49:08 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:45526 J = 4(0, 4) − 3(0, 3) data at 3 mm, using two new pieces of software that we make available to the community. First, SCOUSEPY, a Python implementation of the spectral line fitting algorithm SCOUSE. Secondly, ACORNS (Agglomerative Clustering for ORganising Nested Structures), a hierarchical n-dimensional clustering algorithm designed for use with discrete spectroscopic data. Together, these tools provide an unbiased measurement of the line-of-sight velocity dispersion in this cloud, σ_vlos,1D=4.4±2.1 km s⁻¹, which is somewhat larger than predicted by velocity dispersion-size relations for the central molecular zone (CMZ). The dispersion of centroid velocities in the plane of the sky are comparable, yielding σ_vlos,1D/σ_vpos,1D∼1.2±0.3⁠. This isotropy may indicate that the line-of-sight extent of the cloud is approximately equivalent to that in the plane of the sky. Combining our kinematic decomposition with radiative transfer modelling, we conclude that G0.253+0.016 is not a single, coherent, and centrally condensed molecular cloud; ‘the Brick’ is not a brick. Instead, G0.253+0.016 is a dynamically complex and hierarchically structured molecular cloud whose morphology is consistent with the influence of the orbital dynamics and shear in the CMZ.]]> Thu 03 Nov 2022 12:56:08 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:6960 Sat 24 Mar 2018 08:38:08 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:9626 Sat 24 Mar 2018 08:35:24 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:15637 Sat 24 Mar 2018 08:23:45 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:19539 Sat 24 Mar 2018 08:02:05 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:18609 Sat 24 Mar 2018 08:01:03 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:5397 Sat 24 Mar 2018 07:43:55 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:313 Sat 24 Mar 2018 07:42:42 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:343 Sat 24 Mar 2018 07:42:28 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:28747 d_PD=5–12 mm) and single air bubbles (d_B=1–4 mm) has been measured in a solid–liquid fluidized bed of uniform size borosilicate glass beads (d_P=5 and 8 mm) as a function of liquid superficial velocity. The homogeneity and intensity of the turbulence within the fluidized bed has been quantified and directly related to the slip velocity of the foreign (steel or bubble) particle. It was found that the turbulence resulted in an increase in the computed drag coefficient for all of the experimental conditions investigated.]]> Sat 24 Mar 2018 07:37:35 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26069 Sat 24 Mar 2018 07:31:30 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:25043 Sat 24 Mar 2018 07:10:43 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:18621 Mon 20 Jul 2015 16:31:13 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:43383 Mon 17 Jul 2023 13:24:55 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:45888 Mon 07 Nov 2022 16:30:31 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:45801 Mon 07 Nov 2022 09:58:02 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:36975 Fri 24 Jul 2020 15:16:42 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:53220 Fri 17 Nov 2023 12:00:34 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:34584 Fri 10 Nov 2023 15:41:28 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:37625 Fri 10 Nov 2023 15:40:23 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:52774 Fri 10 Nov 2023 15:39:09 AEDT ]]>