[1] In this study we utilize two organic geochemical proxies, the U37 k′ index and TEX86, to examine past sea surface temperatures (SST) from a site located near the Nile River Delta in the eastern Mediterranean (EM) Sea. The U37 k′ and TEX86 records generally are in agreement and indicate SST ranges of 14°C–26°C and 14°C–28°C, respectively, during the last 27 cal ka. During the Holocene, TEX86...

The convective heat transfer behavior of supercritical nitrogen (S-N2) has played a significant role in optimizing the design recently emerging cryogenic cold storage and recovery systems. However, studies on S-N2 have been relatively scarce, not to mention that there is legitimate urge for robust numerical model accurately predict explain under various working conditions. In this paper, both e...

This paper presents the evaluation of Stanford University Unstructured (SU2) open-source computational software package for a high Mach number 5 flow. The test case selected is an impinging shock wave turbulent boundary layer interaction (SWTBLI) on flat plate where experimental data Sch¨ulein et al. [27] used validation purposes. Two turbulence models, Spalart–Allmaras (SA) and k-ω Shear Stres...

In this study, the aerodynamic analysis of Ahmed body which is generic automobile model performed to determine convenient turbulence and reduce drag coefficient by modifying shape model. For purpose, Computational Fluid Dynamics (CFD) carried out using different models that are Spalart-Allmaras, (Shear Stress Transport) SST k-ω, Standard k-ε, Realizable (Re-Normalisation Group) RNG k-ε models. ...

Supercritical flow through a horizontal pipe leads to non-uniform peripheral wall temperature distribution even when the heat flux is kept constant and uniform. This attributed lower transfer coefficient at top section where denser fluid tends sink. Hence, obtain uniform temperature, designed roughness devised. Uniform sand-grain employed only partly cover half of wall. Numerical simulations we...

In this paper, the k-ω SST (Shear Stress Transport) turbulence model is employed to study effect of flow rate on regular patterns pressure load distribution characteristics helico-axial pump impeller blade surface. The results show that all curves surface at different heights under rates a similar trend increasing first and decreasing then. At inlet area, with increase rate, range negative in a...