X-Authentication-Warning:	delorie.com: mail set sender to geda-user-bounces using -f
X-Recipient:	geda-user AT delorie DOT com
X-Original-DKIM-Signature:	v=1; a=rsa-sha256; c=relaxed/relaxed;
	d=gmail.com; s=20161025;
	h=date:from:to:subject:message-id:in-reply-to:references:mime-version
	:content-transfer-encoding;
	bh=bw7QnC9umrRjGj2wprmgQ0YeNAQyj9TQWS4HeXbc1NI=;
	b=j4PB4UPpPO94ZxPhTMBLxq+RPq5Zoc1uvoGheZ+l97C6WmhWinQ5whc+IkujrF3c98
	QdNG7FZ9uczbjUsR8X2QWivcbUO9f9RasCtpy70guwL9NBi06CAHnHISqcQ/ZdLYBZ2C
	wLsH4bB3wZ207qL7LCQ7PQLvvl6NI3SMvB9gq47QCSojMD2eUPXgVm57x/llNrypRrvZ
	8DrQUZR3RvEENhUBJk3gfONcRYaLodkAY52ys4duclppsE0fU9KxnNr7hkhmHit9sr5A
	9Ki3a9fZSm775h6drzkD0dX1k8RjJq2Emk4cu0R7+nEmIdQ3BO8Nrtfjmuvd5Q0AuYHM
	IiKg==
X-Google-DKIM-Signature:	v=1; a=rsa-sha256; c=relaxed/relaxed;
	d=1e100.net; s=20161025;
	h=x-gm-message-state:date:from:to:subject:message-id:in-reply-to
	:references:mime-version:content-transfer-encoding;
	bh=bw7QnC9umrRjGj2wprmgQ0YeNAQyj9TQWS4HeXbc1NI=;
	b=LIbBc4L9pC92mj9aSzr81BIy3jg+f9B9OY4vTaGOJ50jbkIaeS+R2XMKYnCStffrMY
	PhrblAp0wCjfX/OazOC/2gwoPWn+X6wSnG3tUz/dkAg3vA58PPZOGi/1AYzShOPiq2j0
	C0c7bGpdwBgTqE+kkap5r3Pze+krDdgtNFaYiCltY57fKcSt4mRxDik4Ani9CAJwaC2R
	KDXBxso8uee2Jz82RT4JoBw1EBy8Gou5Xjxl+x+3DW73BCC5vP37Z4NYbOKQNbc60J6f
	q6hIpJmD8ChnWNKDZsfVLsmKo2pwmt9wy4nC/1eYTuxpoIPFB7i5WMCByQcjZwMLvmVo
	j/5g==
X-Gm-Message-State:	APjAAAW0gmp3NBRsKmZnse3sqtxExJMaZagJNJ+mJZUb9w7SfDbLeMGG
	LADN4lqZwcgeM9JEHsoaCBn/NQxC
X-Google-Smtp-Source:	APXvYqz866gmrF/dhu/xLhup74gIHqlR6jNes03MzNbRi7B79meQGavQOYpXC/HcpsfMMNJAt55JJQ==
X-Received:	by 2002:a19:520b:: with SMTP id m11mr12778125lfb.77.1574450401309;
	Fri, 22 Nov 2019 11:20:01 -0800 (PST)
Date:	Fri, 22 Nov 2019 20:19:59 +0100
From:	"N (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To:	geda-user AT delorie DOT com
Subject:	Re: [geda-user] Re: Microwave PCB layout simulation or How to eat
	all your processing power in 3 easy steps --> FEM solver
Message-Id:	<20191122201959.b98981577148347b0c898396@gmail.com>
In-Reply-To:	<CAM2RGhT++rirvYwkNS+VCGqDBwrYu1WqEzY7m4ThYNNgF6fBHQ@mail.gmail.com>
References:	<CAM2RGhT_pQZ8CGGM6ECwDUwJHeo3UwDJ6d_7RtVWhxJBQ=K1tA AT mail DOT gmail DOT com>
	<CAM2RGhT++rirvYwkNS+VCGqDBwrYu1WqEzY7m4ThYNNgF6fBHQ AT mail DOT gmail DOT com>
X-Mailer:	Sylpheed 3.7.0 (GTK+ 2.24.32; x86_64-pc-linux-gnu)
Mime-Version:	1.0
Reply-To:	geda-user AT delorie DOT com
Errors-To:	nobody AT delorie DOT com
X-Mailing-List:	geda-user AT delorie DOT com
X-Unsubscribes-To:	listserv AT delorie DOT com

> > I *hated* that we didn't have a good answer for that. I spent a lot of
> > time looking at FEM (finite element modeling). There are a lot of open
> > source FEM solvers that are open source. Too many really because
> > people keep writing new ones to full fill phd thesis requirements.

Might be able to help out with FEM solver if needed. Started to work on clearance a few years ago and one of the reasons I did not had time yet is because I studied some more mathematics.

I might be able to solve equations but lack background in integration theory and functional analysis so I still have some problem bounding the calculation error. I was thinking about it a few months ago but decided I had enough with the mathematics this spring, I prefer to spend some time on night clubs instead.

> > The FEM we care about is called FDTD (finite-difference time-domain)
> > aka Yee's method.

Methods to solve partial differential equation I know about is FEM (Finite Element Method), finite difference method and finite volume method. I have only used FEM but guess some of the mathematics is same for the methods.


Regards Nicklas Karlsson

- Raw text -