https://novaprd-lb.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://novaprd-lb.newcastle.edu.au/vital/access/ /manager/Repository/uon:45281 Wed 26 Oct 2022 16:10:21 AEDT ]]> https://novaprd-lb.newcastle.edu.au/vital/access/ /manager/Repository/uon:14724 Wed 11 Apr 2018 10:24:51 AEST ]]> https://novaprd-lb.newcastle.edu.au/vital/access/ /manager/Repository/uon:47608 Pr_t for air (Pr = 0.71) and mercury (Pr = 0.025), with a view to calculating the mean temperature. Constant time-averaged (surface) heat flux (CHF) is used as a thermal boundary condition. For each Pr, four values of the Kármán number (h⁺ = 180, 395, 640, 1020) are used. Datasets for the constant heating source (CHS) are also examined. For Pr = 0.71, Pr_t is approximately 1.1 at the wall, varies between 0.9 and 1.1 in the region y⁺ <100, and is approximated by 0.9–0.3(y/h)² for y/h > 0.2. The latter relation, with a low Re correction term (i.e. 25/h⁺), yields an excellent prediction for the mean temperature up to h⁺ = 2000, whereas a calculation based on Pr_t = 0.85 underestimates the mean temperature. The calculated maximum wall-normal turbulent heat flux and Nusselt number also agree well with the empirical relations over a wide range of h⁺. For Pr = 0.025, Pr_t departs significantly from unity inside the inner region (y/h < 0.2) owing to the strong conductive effect, whilst the magnitude in the outer region (y/h > 0.2) tends to approach that corresponding to Pr = 0.71 as h⁺ increases due to the increase in the Peclet number. The h⁺ dependence of Pr_t in the logarithmic and outer regions is represented adequately by the turbulent Peclet number, i.e.Pe_t≡Pr(v_t/V. The resulting Pr_t relation, which is an extension of the expression established by Kays (1994), leads to a correct calculation of the mean temperature not only for mercury (Pr = 0.025) but also for liquid sodium (Pr = 0.01). The mean temperature defect profile exhibits an outer-layer similarity when Pe(≡Re_bPr) ≥ 2000; the Nusselt number is represented by reasonably well.]]> Tue 24 Jan 2023 11:14:51 AEDT ]]> https://novaprd-lb.newcastle.edu.au/vital/access/ /manager/Repository/uon:14847 Tue 13 Aug 2024 08:13:18 AEST ]]> https://novaprd-lb.newcastle.edu.au/vital/access/ /manager/Repository/uon:40737 28.2 °C) the application of the enthalpy-based method leads to erroneous results. For water systems of small volume that often bear a supercooling more than 30 °C, the recalescence stage should be considered in the modelling.]]> Thu 13 Jun 2024 16:41:54 AEST ]]> https://novaprd-lb.newcastle.edu.au/vital/access/ /manager/Repository/uon:14830 Sat 24 Mar 2018 08:25:57 AEDT ]]> https://novaprd-lb.newcastle.edu.au/vital/access/ /manager/Repository/uon:17863 Sat 24 Mar 2018 08:03:29 AEDT ]]> https://novaprd-lb.newcastle.edu.au/vital/access/ /manager/Repository/uon:21122 Sat 24 Mar 2018 07:54:02 AEDT ]]> https://novaprd-lb.newcastle.edu.au/vital/access/ /manager/Repository/uon:27300 Sat 24 Mar 2018 07:38:34 AEDT ]]> https://novaprd-lb.newcastle.edu.au/vital/access/ /manager/Repository/uon:26514 Sat 24 Mar 2018 07:35:31 AEDT ]]> https://novaprd-lb.newcastle.edu.au/vital/access/ /manager/Repository/uon:27171 Sat 24 Mar 2018 07:31:44 AEDT ]]> https://novaprd-lb.newcastle.edu.au/vital/access/ /manager/Repository/uon:23736 72.5%). Furthermore, the thermal conductivity decreases with increasing porosity. A distinct thermal anisotropy is found where maximum values are in the parallel direction and minimum values in the transverse direction to the fibres.]]> Sat 24 Mar 2018 07:16:56 AEDT ]]> https://novaprd-lb.newcastle.edu.au/vital/access/ /manager/Repository/uon:25508 Mon 23 Sep 2019 11:52:21 AEST ]]>