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%ما هو (من)٪ 1 - تعريف

SHOCK WAVE THAT IS INCLINED WITH RESPECT TO THE INCIDENT UPSTREAM FLOW DIRECTION

Oblique shocks; Oblique shock wave

$This chart shows the oblique shock angle, β, as a function of the corner angle, θ, for a few constant M<sub>1</sub> lines. The red line separates the strong and weak solutions. The blue line represents the point when the downstream Mach number becomes sonic. The chart assumes <math>\gamma</math>=1.4, which is valid for an ideal diatomic gas.$

sketch

WIKIMEDIA DISAMBIGUATION PAGE

Sketch vector graphics editor; Sketches; Sketching; Sketch (disambiguation); Sketch (film)

(sketches, sketching, sketched)

1.

A sketch is a drawing that is done quickly without a lot of details. Artists often use sketches as a preparation for a more detailed painting or drawing.

...a sketch of a soldier by Orpen.

N-COUNT

2.

If you sketch something, you make a quick, rough drawing of it.

Clare and David Astor are sketching a view of far Spanish hills...

I always sketch with pen and paper.

VERB: V n, V

3.

A sketch of a situation, person, or incident is a brief description of it without many details.

...thumbnail sketches of heads of state and political figures...

N-COUNT: usu N of n

4.

If you sketch a situation or incident, you give a short description of it, including only the most important facts.

Cross sketched the story briefly, telling the facts just as they had happened.

= outline

VERB: V n

•

Sketch out means the same as sketch
.

Luxembourg sketched out an acceptable compromise between Britain, France and Germany.

PHRASAL VERB: V P n (not pron)

5.

A sketch is a short humorous piece of acting, usually forming part of a comedy show.

...a five-minute sketch about a folk singer.

N-COUNT

sketch

WIKIMEDIA DISAMBIGUATION PAGE

Sketch vector graphics editor; Sketches; Sketching; Sketch (disambiguation); Sketch (film)

¦ noun

1. a rough or unfinished drawing or painting.

a brief written or spoken account or description.

2. a short humorous play, scene, or performance.

3. informal, dated a comical or amusing person or thing.

¦ verb make a sketch of.

?(sketch something out/in) give a brief account or general outline of.

Derivatives

sketcher noun

Origin

C17: from Du. schets or Ger. Skizze, from Ital. schizzo, based on Gk skhedios 'done extempore'.

sketch

WIKIMEDIA DISAMBIGUATION PAGE

Sketch vector graphics editor; Sketches; Sketching; Sketch (disambiguation); Sketch (film)

n.

drawing

1) to draw, make a sketch

2) a composite sketch

3) a rough sketch

short essay

4) a brief, thumbnail sketch

5) a biographical sketch

ويكيبيديا

Oblique shock

An oblique shock wave is a shock wave that, unlike a normal shock, is inclined with respect to the incident upstream flow direction. It will occur when a supersonic flow encounters a corner that effectively turns the flow into itself and compresses. The upstream streamlines are uniformly deflected after the shock wave. The most common way to produce an oblique shock wave is to place a wedge into supersonic, compressible flow. Similar to a normal shock wave, the oblique shock wave consists of a very thin region across which nearly discontinuous changes in the thermodynamic properties of a gas occur. While the upstream and downstream flow directions are unchanged across a normal shock, they are different for flow across an oblique shock wave.

It is always possible to convert an oblique shock into a normal shock by a Galilean transformation.

https://en.wikipedia.org/wiki/Oblique shock