Sentences with phrase «equations for wind»

Not exact matches

The other half of the equation, he notes, is engineering a smart power grid that can distribute renewable energy, from solar or wind, for instance, to charge fleets of EVs.

Scientists could use this theory to calculate peak wind speed if they had numbers for the other metrics in the equation, which could come in handy because wind speeds need to be measured at several points of a storm, making it difficult to get an accurate reading.

«But if you try to imagine a bedtime math routine, as you might for reading, the idea of winding down by completing math equations doesn't elicit the same interest.

Equations are only valid for landward winds, W ≥ 0.

But a trend of lower gas prices, flat power demand and swiftly declining costs for wind and solar have changed the equation.

While there are numerable questionable elements in his discussions (such as placing equivalency between a depletable resource, such as a natural gas well, that might produce for just a few years vs a renewable resource (solar or wind) that can produce at that same location indefinitely), his equations simply do not stand up to even cursory scrutiny.

The corresponding working quasilinear wave equation for the barotropic azonal stream function Ψm ′ of the forced waves with m = 6, 7, and 8 (m waves) with nonzero right - hand side (forcing + eddy friction) yields (34) u˜ ∂ ∂ x (∂ 2Ψm ′ ∂ x2 + ∂ 2Ψm ′ ∂ y2) + β˜ ∂ Ψm ′ ∂ x = 2Ω sin ϕ cos2 ϕT˜u˜ ∂ Tm ′ ∂ x − 2Ω sin ϕcos2 ϕHκu˜ ∂ hor, m ∂ x − (kha2 + kzH2)(∂ 2Ψm ′ ∂ x2 + ∂ 2Ψm ′ ∂ y2), [S3] where x = aλ and y = a ln -LSB-(1 + sin ϕ) / cos ϕ] are the coordinates of the Mercator projection of Earth's sphere, with λ as the longitude, H is the characteristic value of the atmospheric density vertical scale, T˜ is a constant reference temperature at the EBL, Tm ′ is the m component of azonal temperature at this level, u˜ = u ¯ / cos ϕ, κ is the ratio of the zonally averaged module of the geostrophic wind at the top of the PBL to that at the EBL (53), hor, m is the m component of the large - scale orography height, and kh and kz are the horizontal and vertical eddy diffusion coefficients.

This equation implicitly assumes that Tmax is unaffected by changes in wind and is the same as it is for calm conditions.

And yet despite those problems it has been possible for some time to use CFD models of the N - S equations to design complete aircraft and consequently greatly reduce the necessity for the use of very large wind tunnels (and the associated expense).

We know R1 + R2 = R = εσT ^ 4 We could use a «bulk equation» for L if we knew the air temperature & specific humidity + wind speed at reference heights.

So the equation has a term for the humidity 10m (or some other reference height) above the ocean surface, and the wind speed (because that is the main mechanism for moving the less saturated air to the surface).

For example, if water is being warmed on the surface, and then that warmer water is moved down to the deep ocean due to trade winds during La Nina, changing equations to volume and total energy is unnecessary.»

You look that equation up in a manual on aerodynamics, run some easy «wind tunnel» tests with a little house fan, factor that in and find you are very close (close enough for your purposes).