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Since we Use Non-linear Artificial Diffusion

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작성자 Eva
댓글 0건 조회 13회 작성일 25-09-20 12:31

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We carry out an unprecedented high-resolution simulation for the solar convection zone. Our calculation reproduces the quick equator and near-floor shear layer (NSSL) of differential rotation and the near-floor poleward meridional circulation concurrently. The NSSL is located in a fancy layer where the spatial and time scales of thermal convection are significantly 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 nonetheless removed from reality. In this study, we reach 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 importance of the magnetic area in the solar convection zone. ††software: R2D2 Hotta et al. The Sun is rotating differentially with the fast equator and the gradual pole. Omega in the photo voltaic interior. In the solar convection zone, we have two shear layers, i.e., the tachocline round the base of the convection zone and the close to-surface shear layer (NSSL).



ssp090.jpgThe tachocline is thought to be maintained by the interplay 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 a pair of Mm, respectively. Thus, the time scales of the convection vary from a month to several hours in these areas. Because of this, the convection in the NSSL is not significantly affected by the rotation. ′ denote the longitudinal common and the deviation from the average. As well as, Miesch & Hindman (2011) counsel that we want a power to steadiness with the latitudinal Coriolis Wood Ranger Power Shears shop to maintain the NSSL. It is troublesome for numerical simulations to cowl a broad range of spatial and Wood Ranger Power Shears shop time scales. The numerical approach for the NSSL is extremely restricted.



pruning-shears-gloves-5231194.jpgGuerrero et al. (2013) improve the superadiabaticity around the highest boundary of their calculation field and talk about the formation mechanism of the NSSL following Foukal & Jokipii (1975). Hotta et al. NSSL-like feature, especially at low and excessive latitudes. We argue there that the NSSL is maintained by the radially inward angular momentum transport and the turbulent viscosity on the sheared meridional stream. Hotta et al. (2015) fail to reproduce the NSSL in mid-latitude. Matilsky et al. (2019) carry out an analogous 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 within the mid-latitude. They conclude that the detailed construction mechanism of the meridional circulate should be understood to reproduce the correct NSSL. Of their examine, buy Wood Ranger Power Shears coupon Ranger Power Shears highly rotationally constrained convection known as 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) elevated the rotation fee in order to enhance the rotational affect on the thermal convection. We be aware that the decrease in luminosity and the rise in rotation charge have the same impact on the Rossby number. Matilsky et al. (2019) argue that when the rotationally constrained Busse column exists in the deep layer, upflows are rotationally constrained even within the near-floor high Rossby number layer. The environment friendly generation of the near-surface circulation via the gyroscopic pumping successfully suppresses the development of the NSSL. When the earlier calculation (Hotta et al., 2015; Matilsky et al., 2019) was carried out, we did not have any means to maintain the photo voltaic-like DR with out using the lowered luminosity, bigger rotation rates or enhanced diffusivities (photo voltaic convective conundrum). That is, the everyday "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 present a doable resolution to construct the solar-like differential rotation without utilizing special remedy shown above.

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