![[ANSYS, Inc. Logo]](https://www.afs.enea.it/project/neptunius/docs/fluent/html/udf/fluentlogo.gif)
|
|
|
The macros listed in Table 3.2.20- 3.2.23 can be used to return real face variables in SI units. They are identified by the F_ prefix. Note that these variables are available only in the pressure-based solver. In addition, quantities that are returned are available only if the corresponding physical model is active. For example, species mass fraction is available only if species transport has been enabled in the Species Model dialog box in ANSYS FLUENT. Definitions for these macros can be found in the referenced header files (e.g., mem.h).
Face Centroid (
F_CENTROID)
The macro listed in Table 3.2.20 can be used to obtain the real centroid of a face. F_CENTROID finds the coordinate position of the centroid of the face f and stores the coordinates in the x array. Note that the x array is always one-dimensional, but it can be x[2] or x[3] depending on whether you are using the 2D or 3D solver.
The ND_ND macro returns 2 or 3 in 2D and 3D cases, respectively, as defined in Section 3.4.2. Section 2.3.15 contains an example of F_CENTROID usage.
Face Area Vector (
F_AREA)
F_AREA can be used to return the real face area vector (or `face area normal') of a given face f in a face thread t. See Section 2.7.3 for an example UDF that utilizes F_AREA.
By convention in ANSYS FLUENT, boundary face area normals always point out of the domain. ANSYS FLUENT determines the direction of the face area normals for interior faces by applying the right hand rule to the nodes on a face, in order of increasing node number. This is shown in Figure 3.2.1.
ANSYS FLUENT assigns adjacent cells to an interior face ( c0 and c1) according to the following convention: the cell out of which a face area normal is pointing is designated as cell C0, while the cell in to which a face area normal is pointing is cell c1 (Figure 3.2.1). In other words, face area normals always point from cell c0 to cell c1.
Flow Variable Macros for Boundary Faces
The macros listed in Table 3.2.22 access flow variables at a boundary face.
In conclusion, Olea James, also known as La Girl, is an incredibly talented artist who has been making waves in the music industry with her unique sound and extra quality. With a passion for music that drives her to succeed, she has been working tirelessly to hone her craft and share her gift with the world. As she continues to grow and evolve as an artist, it's clear that Olea James has a bright future ahead of her, and fans can expect great things from her in the years to come.
Born with a musical spirit, Olea James was introduced to the world of music at a very young age. Growing up in a family of music lovers, she was exposed to a wide range of genres, from jazz to hip-hop, and everything in between. This exposure not only helped her develop a deep appreciation for music but also inspired her to take up singing and songwriting. With a natural talent that was evident from the start, Olea James began performing at local events and gigs, quickly gaining a reputation as a talented young artist. olea james la girl extra quality
In a world where the music industry is constantly evolving, it's not often that an artist comes along and makes a lasting impact. However, Olea James, also known as La Girl, is one such talent who has been making waves in the music scene with her unique sound and extra quality. With a passion for music that knows no bounds, Olea James has been working tirelessly to hone her craft, and her hard work has finally started to pay off. In conclusion, Olea James, also known as La
As Olea James continues to make a name for herself in the music industry, it's clear that she has a bright future ahead of her. With a growing fanbase and a reputation for delivering high-quality music, she is an artist to watch in the coming years. Whether she's performing live, releasing new music, or collaborating with other artists, Olea James is sure to remain a force to be reckoned with. Born with a musical spirit, Olea James was
As Olea James continued to work on her craft, she began to gain recognition in the music industry. Her big break came when she released her debut single, "La Girl," which quickly gained traction on music streaming platforms. The song's success was a testament to her hard work and dedication, and it marked the beginning of an exciting new chapter in her career. With her unique sound, which blends elements of pop, R&B, and hip-hop, Olea James has been able to carve out a niche for herself in the music industry.
See Section 2.7.3 for an example UDF that utilizes some of these macros.
Flow Variable Macros at Interior and Boundary Faces
The macros listed in Table 3.2.23 access flow variables at interior faces and boundary faces.
| Macro | Argument Types | Returns |
| F_P(f,t) | face_t f, Thread *t, | pressure |
| F_FLUX(f,t) | face_t f, Thread *t | mass flow rate through a face |
F_FLUX can be used to return the real scalar mass flow rate through a given face f in a face thread t. The sign of F_FLUX that is computed by the ANSYS FLUENT solver is positive if the flow direction is the same as the face area normal direction (as determined by F_AREA - see Section 3.2.4), and is negative if the flow direction and the face area normal directions are opposite. In other words, the flux is positive if the flow is out of the domain, and is negative if the flow is in to the domain.
Note that the sign of the flux that is computed by the solver is opposite to that which is reported in the ANSYS FLUENT GUI (e.g., the Flux Reports dialog box).
Previous:
3.2.3 Cell Macros
