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Messages - APoloG13

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TI-Nspire / Static3D
« on: November 13, 2018, 10:02:35 am »
Hello everybody,

Today i'm bringing to you a 3 axis structural analysis made for help you to obtain the Forces and momentum equations once you make the free body diagram.

This is only a fast v1 so feel free to comment, i'm planing to make it even do the free body diagram wich I will probably need help to do.

To use only input the forces of each node [ax,ay,az] and their position A[x,y,z] and the program will calculate for you the equations.

Hope you like it.

P.D: Also works with 2D problems.

TI-Nspire / Re: Electric Circuit Calculation
« on: November 12, 2018, 08:08:04 pm »
Upgrade for the program, i manage to make a modified nodal analysis for 3 node circuits wich i plan to upgrade for more nodes, not hard to use.

If anyone have any questions or want to help to improve the program will be more than welcome  ;)

TI-Nspire / Re: Electric Circuit Calculation
« on: October 31, 2018, 08:26:48 pm »
Well, i FINALLY managed to make a program that actually works and makes quite exact calculations based on the modify nodal analysis algorithm.

For now only supports for a 2 node circuit. The code is quite a bit a lot shitty, hope someone can help me to make it prettier (because it's actually my first "hard" program) but works.

To make it work just fill the request windows and it will solve all your problems (2 nodes problmes)

TI-Nspire / Re: Electric Circuit Calculation
« on: October 19, 2018, 07:22:09 pm »
Maybe like an structural analysis, you know xy coordinates for the nodes, specify where the wires go and then specify in wich lines we have something?
Something like :


Coordinates of the nodes:
Node 1(0,0)
Node 2(1,0)
Node 3(1,1)
Node 4(0,1)

Nodes conections?
a 1-2
b 2-3
c 3-4
d 4-5

Any wire have something?
a - Battery
c - 10kOhm resistor

Maybe that could be a way don’t know, of course would be incredible if it draws it as you could see if you have made any mistake inserting the data but one step then other.

What do you think?

TI-Nspire / Electric Circuit Calculation
« on: October 14, 2018, 07:23:58 pm »
Hello omnimaga users,

I'm opening this topic to discuss/brainstorm/beg for help because I have in mind to create a program to solve circuits.

For those who don't know what i mean with solve circuits i will explain myself. When you elaborate a circuit you end knowing what intensity, voltage, resistance and power you have on each branch, node and object using the Kirchhoff Laws of current and voltage combined with the Ohm law. Basically an equation system. ( For more info )

The idea is to elaborate a program in wich we can "draw" our circuits and it will be able to find the nodes and branch and after that calculate all the enigmas of the circuit.

What's the problem? Don't know how to do the part for insert the data / draw the circuit, because the most common scenario will be always you have a circuit and some data known and some missing data. I assume the calculation part will be the easy part (I assume... probably wrong).

Hope someone could give me a hand with this project.

Thanks for your attention.

General Calculator Help / Re: Thermodynamic Cycles Program
« on: January 25, 2017, 07:03:51 pm »
Better news, i'm an idiot...

Basically i "discover" that you can add a page in the assthermo and use all the data for calculations... :banghead:

So I have to think the way of implement all that data on a program for "simulate" thermocycles and the assumptions, any ideas?

General Calculator Help / Re: Thermodynamic Cycles Program
« on: January 23, 2017, 08:14:59 am »
Ok,good news, after a lot of research I found the steam tables in excel which is a huge advance.

The next step, is multiple interpolation and equations... actually this lost me a lot because there's a lot of data trust me...

After this:

Steam tables spreadsheet
Interpolation program
Assumptions calculation program
Find best language (C, C++,Python,LUA...)
Nspire coding

Hope someone help me with all of that.

General Calculator Help / Re: Thermodynamic Cycles Program
« on: January 18, 2017, 11:33:09 am »
If you are using C/C++, yes, you can create a file containing the data, rename it to give it the ".tns" extension, transfer it to your calculator as well as the program. Then, the program can look for this file by its name and open it.

Actually the program containing all the data exists, it's called AssThermoD for tns. If there is some way to use those results/calculations on other program i will have like 60% done because the parameters that have to be calculated need that data of AssThermo

General Calculator Help / Re: Thermodynamic Cycles Program
« on: January 01, 2017, 09:45:03 pm »
I'm starting with the basic @SpiroH and made a few "programs" (if I can name it like that).

I've one question, you can have different .tns but use it as one?

Like have a .tns for the data storage with interpolations... and the other for calculations using the data obtained on the other .tns.

Happy new Year!!

General Calculator Help / Re: Thermodynamic Cycles Program
« on: December 30, 2016, 06:26:45 pm »
I'm stuck... definitely need help.

Have the assthermo has a base and know what I want to do but don't have the knowledge for create a program  :mad:

I analyzed the results of asstermo with the EES and are prefect. The next step is, how?

How can I make a function that grabs the results of the AssThermo and make calculations for a single element or a whole cycle with the assumptions?

@SpiroH @Legimet @coops... any idea?

General Calculator Help / Re: Thermodynamic Cycles Program
« on: December 29, 2016, 11:34:35 am »
Thanks for the excels @coops I'm trying to understand them and are giving me a lot of ideas.

I'm thinking how to do everything for make it easy for everyone, talking from my programming unknown so don't know if what I say is possible or not so feel free to say I'm wrong.

Start with one or two substance and have one archive or table with the properties, so when the program starts, ask for the substance you will study in your cycle (air, water, ammonia, R-134a..) and what type of cycle you have open or close.

After that, you can select the configuration you of your cycle by choosing the elements for example i want to study a Rankine Cycle, so I insert the cooler, the pump, the heater and the turbine and by clicking for example on the turbine show what can be calculated, the assumptions and the missing parameters (Like CyclePad does).

Then you set the connection streams in the order you want and automatically calculates as soon has the cycle is ended or the element have all the information it needs.

The results of each can be shown on alternate window.

Don't know if I explained myself correctly or I'm too much ambitious  ???

General Calculator Help / Re: Thermodynamic Cycles Program
« on: December 28, 2016, 11:46:38 am »
@coops did you find the excel?

General Calculator Help / Re: Thermodynamic Cycles Program
« on: December 27, 2016, 05:23:32 pm »
Still not, the internet of my home is down so I will have to wait.

General Calculator Help / Re: Thermodynamic Cycles Program
« on: December 27, 2016, 02:27:02 pm »
Thanks for the advice and coops of you find that excel and you let me take a look of it... could be very usefull, also I thing that the hardest part would be the tables (i have beber programed anything) but hope using muy Excel knowledge as a base will help.

And coops with Ndless the calc can run C programming (don't know if C++) maybe can we collab

General Calculator Help / Re: Thermodynamic Cycles Program
« on: December 27, 2016, 10:02:55 am »
Hello @APoloG13,

After a bit of googling I just found this for TI-Nspire (among others): 'Asstermo-D-Agua '.  For me the page is in portuguese, i dunno if you can read it (if not try google translate)

Hope it helps.

Hello @SpiroH,

I know that there are a few types of AssTermo, and that's the key. The idea is to implement those in a program for doing thermodynamical cycles or alone calculations(motor, compressor, exchangers...).

For example, you have air and a isoentrpoic compresor, know P inlet and H outlet and the efficiency. Introducing those valúes the program will gave you the missing ones.

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