Since We Use Non-linear Artificial Diffusion

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We perform an unprecedented high-resolution simulation for the photo voltaic convection zone. Our calculation reproduces the quick equator and near-surface shear layer (NSSL) of differential rotation and the close to-surface poleward meridional circulation concurrently. The NSSL is located in a fancy layer the place the spatial and time scales of thermal convection are considerably small compared with the deep convection zone. While there have been several makes an attempt to reproduce the NSSL in numerical simulation, the results are still removed from reality. In this research, we succeed in reproducing an NSSL in our new calculation. 4) the turbulent viscosity and magnetic tension are latitudinally balanced with the Coriolis force in the NSSL. We emphasize the significance of the magnetic subject in the photo voltaic convection zone. ††software: R2D2 Hotta et al. The Sun is rotating differentially with the fast equator and the slow pole. Omega in the photo voltaic inside. In the photo voltaic convection zone, now we have two shear layers, i.e., the tachocline around the base of the convection zone and the close to-surface shear layer (NSSL).



The tachocline is thought to be maintained by the interaction between the convection and radiation zones (Spiegel & Zahn, 1992; Gough & McIntyre, 1998; Forgács-Dajka & Petrovay, 2001; Rempel, 2005; Brun et al., 2011; Matilsky et al., 2022). The NSSL is thought to be maintained by the small-spatial and short time scales of the convection in the layer. T/g, where TT and gg are the temperature and the gravitational acceleration, respectively. 60 and 2 Mm, respectively. Thus, the time scales of the convection range from a month to several hours in these regions. Consequently, the convection in the NSSL is just not considerably affected by the rotation. ′ denote the longitudinal average and the deviation from the typical. As well as, Miesch & Hindman (2011) suggest that we want a Wood Ranger Power Shears to stability with the latitudinal Coriolis pressure to maintain the NSSL. It is tough for Wood Ranger Power Shears numerical simulations to cowl a broad vary of spatial and time scales. The numerical method for the NSSL is very restricted.



Guerrero et al. (2013) enhance the superadiabaticity around the top boundary of their calculation box and discuss the formation mechanism of the NSSL following Foukal & Jokipii (1975). Hotta et al. NSSL-like function, wood shears Ranger cordless power shears Shears especially at low and high latitudes. We argue there that the NSSL is maintained by the radially inward angular momentum transport and the turbulent viscosity on the sheared meridional flow. Hotta et al. (2015) fail to reproduce the NSSL in mid-latitude. Matilsky et al. (2019) perform an identical calculation to Hotta et al. 2015) and reproduce the NSSL-like characteristic at high and low latitudes. The authors also fail to reproduce the NSSL in the mid-latitude. They conclude that the detailed development mechanism of the meridional movement must be understood to reproduce the right NSSL. In their study, extremely rotationally constrained convection called the Busse column, is required to reproduce the solar-like quick equator differential rotation. Hotta et al. (2015) reduced the solar luminosity and Matilsky et al.



2019) increased the rotation rate in order to enhance the rotational influence on the thermal convection. We word that the lower in luminosity and the increase in rotation rate have the same effect on the Rossby quantity. Matilsky et al. (2019) argue that when the rotationally constrained Busse column exists within the deep layer, upflows are rotationally constrained even in the close to-floor excessive Rossby number layer. The environment friendly era of the close to-floor circulation via the gyroscopic pumping effectively suppresses the construction of the NSSL. When the previous calculation (Hotta et al., 2015; Matilsky et al., 2019) was carried out, we did not have any means to maintain the solar-like DR with out utilizing the lowered luminosity, bigger rotation rates or enhanced diffusivities (solar convective conundrum). That is, the standard "high-resolution" simulations fall into anti-photo voltaic differential rotation. O’Mara et al., 2016; Hotta et al., 2023). Hotta & Kusano (2021)(hereafter HK21) and Hotta et al. 2022)(hereafter HKS22) just lately provide a potential resolution to assemble the solar-like differential rotation with out utilizing particular remedy shown above.