Full Answer
What are the dimensions of the swirling flows?
The simulated dimensions of the swirling flows are in streamwise, lateral and spanwise directions, respectively ( Fig. 4.18 A). For the spatial discretization, structured grids are used, which could resolve the scales of turbulence as fine as about 0.075 d. The dimensionless variables and their corresponding real scales are used ( Table 4.6 ).
What is the swirling sequence in a seed system?
The swirling flow provides the required shear in the melt to generate a globular microstructure. The swirling sequence is approximately 100–160 s and the origin behind the high slurry quality. (3) Older SEED system had a draining stage to allow the high fraction solid slurry to be removed from the container.
How do you create a swirling flow pattern in a reactor?
To generate the swirling flow pattern of the gas-solid mixture interior of the reactor, a swirling gas (secondary) was fed tangentially into the reactor at the wall of the reactor. The height of the swirling gas (nitrogen) injection port was 0.2 m from the distributor to avoid the end effect. Fig. 1.
How does a swirling flow inducing blade work?
A swirling flow-inducing blade attached to the exterior surface of the guide pipe, causes the reaction mixture to rise along the exterior surface of the guide pipe while forming a swirling flow. Nan Gui, ... Xingtuan Yang, in Gas-Particle and Granular Flow Systems, 2020
What is a swirling pattern called?
Paisley or paisley pattern is an ornamental textile design using the boteh (Persian: بته) or buta, a teardrop-shaped motif with a curved upper end.
How do you make swirl marks on metal?
0:003:33My Shop:Circular patterns-swirls on metal - YouTubeYouTubeStart of suggested clipEnd of suggested clipI think in the swirls on the metal is very simple you can take one of these Scotch pads and you canMoreI think in the swirls on the metal is very simple you can take one of these Scotch pads and you can get these over at Harbor Freight or wherever.
How do you get designs on metal?
The TheoryPrint out a design from the computer to your desired scale.Put printed design face down onto metal and secure in place with masking tape.Dab the paper with acetone. This will transfer the printed design onto the metal.Remove the paper and masking tape.
How do you make an engine turn?
2:2827:05Metal Finishing With Mark - Engine Turning 101 - YouTubeYouTubeStart of suggested clipEnd of suggested clipUsually something relatively soft certainly softer than the material that you're going to be workingMoreUsually something relatively soft certainly softer than the material that you're going to be working on and then you simply put the pattern on in repeating rows and repeated spaces.
How do you brush sheet metal?
1:152:59Brushed Stainless Steel Look - Tutorial - YouTubeYouTubeStart of suggested clipEnd of suggested clipWith my hand you just go with the grain that's used for creating. And you just go nice and big longMoreWith my hand you just go with the grain that's used for creating. And you just go nice and big long strokes to trying to get that nice even finish. And then just wipe it clean.
How do you texture Aluminium?
0:592:19How to Texture Aluminum ! - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo you're going to create our pattern you're going to make sure you wipe this down with acetone soMoreSo you're going to create our pattern you're going to make sure you wipe this down with acetone so it's nice and clean the scratches are dogmatic is this going to send it down.
How do you remove swirl marks from stainless steel?
You can use mineral oil, vegetable oil, or even olive oil. Rub the cloth against the steel, in the direction of the grain, to polish the metal. Add more oil as necessary. Continue rubbing until the entire surface has been polished.
What is brushed Aluminium?
Brushed or dull polished metal is metal with a unidirectional satin finish.
Where is the swirl pattern on a bridle?
Ideal swirl pattern – one swirl on the forehead between the eyes , and 2 identical swirls on either side of the bridlepath, not extending past the length of the ear folded back. Flank swirls are even on both sides.
Where are the swirls on horses?
First off, a swirl is a patch of hair growing in a different direction, also called whorls, cowlicks, and trichoglyphs, and are found on the horses forehead, on the flanks, and numerous other places over the body . The method of swirls to make assumptions about a horse date back to the Bedouins of Arabia. European gypsies also relied on the study of swirls as did many old time horseman. Linda Tellington Jones popularized the swirl method with her research in the 60s, 70s, and 80s.
Why do horses have swirls?
A horse’s swirls are formed before birth and never change. This is why swirls were also used as a way to identify horses on old registry papers and other places where identifications was needed. The forehead swirls are considered to be the most indicative of temperament because the forehead hair is the first to grow on the embryonic fetus, and it is thought that the development of swirls is linked directly to development of the brain. Also, the nervous system and the skin come from the same embryonic layer, further pointing towards a connection between swirls and the brain. The theory states that as energy flows through the body it is redirected or disrupted by unusual swirls, causing the reactive or explosive nature of horses with the undesirable swirl pattern.
What does it mean when you have swirls on your forehead?
Swirls higher on the forehead indicate greater intelligence and a more reactive nature
Where did the paisley pattern get its name?
The pattern got its name from the town of Paisley, Scotland, where textiles with the design were produced.
What is a houndstooth pattern?
It is a two-tone pattern that combines dark and light yarns in uneven rows. The uneven pattern results in a design that looks similar to a dog’s tooth, hence the name houndstooth. Houndstooth is popular in jackets and clothing but is also great for upholstery. 5.
What is the pattern of a curvy ogee?
Ogee patterns can sometimes resemble an onion. This curvy pattern is often used in bedding and rugs. 9. Jacobean: These patterns date back to the 17 th century during the reign of King James I of England. A common motif in Jacobean fabrics is branches ornamented in color with fruits, flowers, and/or birds.
What is a chevron pattern?
Chevron: A zigzag stripe pattern , chevrons have been popular in the U.S. for decades. The term chevron comes from the inverted V shape used in military insignia. In fact, the design goes back as far as 1800 B.C. on pottery and rock carvings. Chevrons are a fun, playful fabric for pillows, window treatments and much more.
What is the name of the fabric used in weddings?
5. Suzani (Su-ZA-nee): A traditional Middle Eastern pattern, suzani textiles were embroidered by brides as part of their dowry and presented to the groom on the wedding day. Suzani fabrics are usually a large-scale design with sun and moon disk (medallion), floral, and vine motifs.
What is a quatrefoil?
The name quatrefoil is Latin for “four leaves” and the design resembles a four-leaf clover. There are many variations of the quatrefoil, including the “barbed quatrefoil,” which is squarer and the “slipped” quatrefoil, which has a small stem. This design is popular in window treatments, pillows and wallpaper. 4.
What is matelasse fabric?
This makes sense, as a matelassé fabric is a design with a raised pattern that appears padded, quilted or embossed. While they appear padded, matelassé fabrics don’t actually contain any padding.
How is swirl imparted?
The swirl is imparted through the initial distribution of tangential velocity at the inlet boundary according to [288] ( Fig. 4.18B and 4.18C, corresponding to the tangential (azimuthal) and axial velocity profiles, respectively). The degree of swirl is defined by the ratio of maximum tangential velocity to the mean axial velocity:
What are the dimensions of swirling flows?
The simulated dimensions of the swirling flows are 30 d × 10 d × 10 d in streamwise, lateral and spanwise directions, respectively ( Fig. 4.18A). For the spatial discretization, 384 × 128 × 128 structured grids are used, which could resolve the scales of turbulence as fine as about 0.075 d. The dimensionless variables and their corresponding real scales are used ( Table 4.6 ).
How do particles change flow patterns?
In pneumatic conveying of solid particles different flow patterns are observed for a given pipeline by different mechanisms. When the gas velocity increases to the pipe exit in a straight pipe due to the exp ansion of the gas there can be observed a slug flow in the upstream and a suspension flow in the downstream. When t he particles are fed into a swirling gas flow at the inlet, the swirling flow is finally changed to a straight flow in the downstream. If the pipeline is complicated by bends, the suspension flow can develop to a large-scale pulsating flow in the downstream. These kinds of change of particle flow pattern are rather continuous. According to Zenz [1 ], there is a discontinuous transition in particle flow pattern at the saltation velocity. Above the saltation velocity, the particles are conveyed in suspension. When the gas velocity is lowered from the saltation velocity, the particles begin to settle out and the particle settled layer is formed above which the particles are conveyed in suspension. It takes time for the settled layer to be fully formed in the pipeline and the height of the layer becomes high when the gas velocity is lowered. Bohnet [ 2] experimentally investigated the settling, raising and conveying of fine particles in a horizontal pipe. He noted that for some particles the plug flow conveying was realized where the settled layer swelled to plug the pipe cross-section and was periodically swept out. Now, low velocity pneumatic conveying is widely applied in industry and there are many researches on slug and plug flow conveying [ 3–10 ]. However, it is still difficult to locate such conveying pattern in a flow map due to the peculiar unsteadiness of flow. Various particle flow patterns are observed other than slug and plug flows in the low velocity region. It is sometimes observed transiently that the settled layer diminishes without plugging the pipe cross-section where the rear side of the layer is eroded by impinging particles.
What is ikat pattern?
If you’ve ever wondered what exactly ikat or houndstooth are, you’re not alone. There are hundreds of fabric patterns and types commonly used in the fashion and interior decorating world. Some of them are very well known—like stripes—while others are more obscure, such as fleur-de-lis or ditzy. Take a look at 30 common fabric patterns used in ...
What is chevron pattern?
Chevron is a pattern of zigzagging stripes, typically in two alternating colors . As with checked designs, one of the colors is usually white. Chevron has a fun, contemporary flair and the energetic lines add a touch of pizzazz to an otherwise sedate room.
What is brocade fabric?
A true brocade has a raised design that looks embroidered but is actually woven into the fabric. Brocade is often made of silk or satin, and frequently incorporates metallic threads or similar decorative touches. The colors are typically somewhat subdued, and the fabric is often used in traditional decorating schemes.
What is basket weave pattern?
As the name suggests, a basketweave pattern looks like the crisscross composition of a basket. The design can literally be woven with ribbon, or merely printed on the fabric, but the overall effect is symmetrical and somewhat like a checkerboard. You can find this classic design in just about any color combination from neutral to bright. Basketweave is a great pattern for any contemporary style.
What is a chintz?
Chintz. Popular in Grandma's day, but making something of a comeback, chintz is a cotton fabric that's been glazed, resulting in a high shine. Yesterday's chintz often featured large florals, but today, you can find many solid colors, especially deep jewel tones.
What is flame stitch?
There's a definite retro appeal to flame stitch design—it was very popular in the 1970s. The pattern is a closely spaced series of flame-like, jagged lines. Unlike chevron, flame stitch's zigs and zags are usually thin and can vary in height. It's a fun pattern for a contemporary room, and a must-have if you love all things retro.
Can you mix florals with other patterns?
Depending on the style of the floral pattern, you can mix-and-match florals with just about any other pattern.
What is a whorl in anatomy?
Anatomical terminology. A hair whorl is a patch of hair growing in a circular direction around a visible center point. Hair whorls occur in most hairy animals, on the body as well as on the head. Hair whorls, also known as crowns, swirls, or trichoglyphs, can be either clockwise or counterclockwise in direction of growth.
What is a whorl on the head?
In human theories. Hair whorls on the head ( parietal whorls) have been studied by some behaviorists. Most people have clockwise scalp hair-whorls. Parietal whorls which are considered to be normal scalp patterns could be a single whorl or double whorls. Cases of triple parietal whorls are less common.
Why are abnormal hair whorls used?
One paper has suggested that abnormal hair whorls can be used to assess the likelihood of agitated behavior or temperament in cattle in the auction ring.