![[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.
Title: More Than a Letter: Understanding the Transgender Community Within LGBTQ+ Culture
Header Image Idea: A subtle gradient of the Transgender Pride Flag (light blue, pink, white) blending into the Progress Pride Flag.
There is a common misconception that “LGBTQ+ culture” is a monolith. Pop culture often distills it down to drag brunches, “Yas Queen” memes, and coming-out cakes. But inside this beautiful umbrella, there are specific communities with distinct histories, struggles, and joys. Chief among them is the transgender community.
To talk about LGBTQ+ culture without centering trans voices isn’t just inaccurate—it’s impossible. Here is why the trans community isn't just a part of the rainbow; for many, it is the heartbeat of it.
Some trans activists argue that gay and lesbian culture has historically built its identity on biological sex, not gender. For example, the iconic phrase "We're here, we're queer, get used to it" was born in a bi-gendered context. Today, when a cisgender gay man says he is not attracted to trans men with vaginas, is that a "genital preference" or transphobia? There is no consensus. The debate has become a painful crossroads between sexual autonomy and gender affirmation.
Perhaps the most profound contribution of the transgender community to LGBTQ culture is linguistic. Twenty years ago, the conversation revolved around "sexual orientation." Today, it is impossible to discuss queer culture without the vocabulary of gender identity, expression, dysphoria, non-binary, agender, and genderfluid. tube lesbi shemale repack
Transgender theorists, such as Susan Stryker and Julia Serano, introduced concepts that have bled into mainstream LGBTQ discourse:
Today, a bisexual cisgender woman and a non-binary pansexual person can find common ground not through who they love, but through their shared rejection of rigid gendered expectations—a gift from trans discourse.
To focus solely on violence and politics is to miss the vibrant, joyful culture the transgender community has birthed within the larger LGBTQ umbrella.
Art and Performance: From the underground ballroom culture immortalized in Paris is Burning (which gave us voguing, "realness," and a lexicon of queer excellence) to the television phenomenon Pose, trans artists have redefined entertainment. Indya Moore, MJ Rodriguez, and Hunter Schafer are not just trans actors; they are style icons and cultural critics who speak for a generation.
Fashion and Aesthetics: The blurring of gendered clothing—men in skirts, women in tailored suits, androgynous modeling—is directly attributable to trans and gender-nonconforming influence. Designers like Harris Reed and Palomo Spain explicitly credit trans muses for challenging the binary. Title: More Than a Letter: Understanding the Transgender
Social Media and Community-Building: Trans creators on TikTok, YouTube, and Instagram have built vast networks of mutual aid. During the COVID-19 pandemic, when many lost access to healthcare and housing, #TransCrowdFund became a vital lifeline. These digital spaces are now a cornerstone of modern LGBTQ culture, offering mentorship for young trans people in areas where physical community is scarce.
The popular narrative of LGBTQ history often begins with the 1969 Stonewall Uprising. But who was at the front lines of that rebellion? The mainstream media often highlights gay men and lesbians, but historical records, including first-hand accounts from figures like Marsha P. Johnson and Sylvia Rivera, tell a different story.
Marsha P. Johnson, a Black transgender woman and self-identified drag queen, was a central figure in the resistance against police brutality at the Stonewall Inn. Sylvia Rivera, a Latina transgender activist, fought tirelessly to ensure that the nascent Gay Liberation Front did not abandon the most marginalized: drag queens, trans sex workers, and homeless queer youth.
"Gay liberation was supposed to be for everyone," Rivera famously said in a fiery 1973 speech at a New York City Pride rally, where she was booed for demanding that the movement prioritize homeless drag queens and trans women. "You all tell me, 'Go away! We don't want you anymore!' Well, I have been beaten. I have had my nose broken. I have been thrown in jail. I have lost my job. I have lost my apartment for gay liberation, and you all treat me this way?"
This tension—between the "respectable" gay mainstream and the radical, gender-nonconforming fringe—has existed from the very beginning. The "T" was not a late addition to the acronym; it was there at the inciting incident, even if its contributions were later erased. The distinction between sex, gender, and sexuality: This
The AIDS Crisis further cemented the alliance. During the 1980s and 1990s, as gay men died in staggering numbers, trans women—many of whom also lived with HIV—were among the most dedicated caregivers and activists in organizations like ACT UP. The shared experience of state neglect, medical discrimination, and mass death forged a bond of survival. If the government would let gay men and trans women die, then their fight was indisputably connected.
To write an article on the "transgender community and LGBTQ culture" is to write about a marriage. Like any long-term partnership, it has love, resentment, codependence, and the occasional explosive fight in the kitchen. But it is also a partnership that has produced art, resistance, and survival against impossible odds.
The transgender community has pushed the broader LGBTQ culture to be more radical, more thoughtful about bodies and identity, and less willing to beg for crumbs of acceptance. In turn, the broader LGB community has provided infrastructure, legal precedent, and a cultural platform that trans people alone could not have built in a single generation.
As the rainbow flag evolves—with the intersex and transgender chevrons now joining the classic stripes—its meaning remains the same. It is not a promise of sameness. It is a promise of solidarity. It is the vow that when one of us bleeds, the others do not look away. And in a world that still fears anyone who loves differently or lives outside the binary, that promise is everything.
The future of the transgender community is inseparable from the future of LGBTQ culture. They will rise together, or not at all. And if the past fifty years have taught us anything, it is that they will rise.
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.
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
