docs: make homepage more appealing (#4223)

The PyFluent documentation home page is fragmented into too many small
sections, some of which are thin in content and repetitive. This pull
request address that.

---------

Co-authored-by: pyansys-ci-bot <[email protected]>

Author: seanpearsonuk

doc/changelog.d/4223.documentation.md

@@ -0,0 +1 @@
+make homepage more appealing

doc/source/index.rst

@@ -13,58 +13,56 @@ PyFluent documentation |version|
    changelog
 
 
-Welcome to PyFluent documentation
----------------------------------
-Welcome to the official documentation for PyFluent, your gateway to harnessing
-the power of Ansys Fluent through Python.
+Welcome to PyFluent
+-------------------
+PyFluent is your gateway to harnessing the power of Ansys Fluent through
+Python. It enables engineers and developers to automate, customize, and
+streamline CFD workflows using the flexibility of Python.
 
 
-Overview of PyFluent
---------------------
-PyFluent is a Python library that enables users to interact with Ansys Fluent,
-a powerful computational fluid dynamics (CFD) tool, programmatically. PyFluent
-allows you to automate, customize, and streamline your CFD workflows using the
-flexibility and power of Python.
+Why Use PyFluent?
+-----------------
 
+- **Automation**: Eliminate repetitive tasks and accelerate simulation workflows.
+- **Customization**: Control Fluent behavior with Python for tailored solutions.
+- **Efficiency**: Reduce manual steps and improve reproducibility.
+- **Integration**: Seamlessly integrate with other Python libraries and tools.
 
-Integration with Fluent
------------------------
 
-While Ansys Fluent provides a comprehensive graphical interface for CFD simulations,
-PyFluent extends its capabilities by offering a programmatic approach. This integration
-allows for enhanced automation, scripting, and the development of custom applications.
+How It Works
+------------
 
+PyFluent connects to Ansys Fluent and allows programmatic interaction using a
+modern Python API. It supports simulation setup, execution, monitoring, and results
+extraction.
 
-Key features
-------------
 
-- **Automation**: Automate repetitive tasks and complex workflows.
-- **Customization**: Tailor Fluent operations to specific needs with Python scripts.
-- **Efficiency**: Improve productivity by reducing manual intervention.
-- **Flexibility**: Seamlessly integrate with other Python libraries and tools.
+Compatibility
+-------------
+PyFluent supports **Ansys Fluent 2022 R2 and later**.
 
 
 Getting started
 ---------------
 
-To get started with PyFluent, follow the steps on the :ref:`getting_started` page.
+Get started with PyFluent by following the steps in the :ref:`getting_started` guide.
 
-Useful links
-------------
+
+Resources
+---------
 
 - `PyFluent GitHub repository <https://github.com/ansys/pyfluent>`_
 - `Fluent documentation <https://ansyshelp.ansys.com/public/account/secured?returnurl=/Views/Secured/prod_page.html?pn=Fluent>`_
 - `Ansys customer portal <https://support.ansys.com>`_
 
 
-Community and support
----------------------
+Need Help?
+----------
 
-Join the community to get help and share your experiences with other users:
+Visit the community or support resources:
 
 - `PyAnsys community forum <https://forum.pyansys.com>`_
 - `Submit a bug report <https://github.com/ansys/pyfluent/issues>`_
 - `Contact support <https://support.ansys.com>`_
 
-See :ref:`ref_contributing` for guidance on how you can contribute to PyFluent
-by reporting issues, suggesting features, or submitting pull requests on GitHub.
+See :ref:`ref_contributing` for how to report issues or contribute via GitHub.